Materiały źródłowe

• #1 Colon Cancer: Symptoms, Stages, Outlook, and More

  https://www.healthline.com/health/colon-cancer

  You might not experience colon cancer symptoms at all, especially in the early stages. […] If you do experience symptoms of colon cancer, they may include: constipation, diarrhea, blood in the stool, changes in stool color, changes in stool shape, such as narrowed stool, bleeding from the rectum, unintentional weight loss, abdominal pain, excessive fatigue, the feeling that your bowel won’t completely empty (tenesmus). […] It’s important to note that many of these symptoms may also be caused by other less serious conditions. […] Many people don’t experience symptoms of colon cancer during stage 1. However, it’s possible to experience changes in your bowel habits, rectal bleeding, fatigue, and unexplained weight loss. […] The progression of colon cancer varies for each person. However, the ACS notes that colon cancer usually takes years to develop and spread. Early detection and treatment are key to preventing further spreading and complications.

• #2 Colon cancer: Symptoms, stages, causes, and treatment

  https://www.medicalnewstoday.com/articles/150496

  Colon cancer develops when tumorous growths form in the large intestine. It often produces no symptoms in the early stages, but people should see a doctor if they notice persistent changes in bowel habits. […] Symptoms and signs may include one or more of the following: diarrhea or constipation, changes in stool consistency, such as loose, narrow stools, blood in the stool, which may make stools appear dark brown or black, bright red bleeding from the rectum, abdominal pain, cramping, bloating, or gas, continual urges to defecate despite passing stools, weakness and fatigue, unexplained weight loss, iron deficiency anemia. […] Weight loss and abdominal pain usually occur in the later stages of the disease. […] Colon cancer often causes no symptoms in the earliest stages, but symptoms may become more noticeable as the disease progresses. If people do have symptoms in the early stages, they may include: blood in the stool, a change in frequency or type of bowel movements, such as diarrhea, constipation, or narrow, ribbon-like stools, the feeling of not emptying the bowels after a bowel movement, abdominal pain, cramping, or bloating, anemia, due to intestinal bleeding, fatigue and weakness.

• #3 Early detection of bowel cancer | Cancer Council

  https://www.cancer.org.au/cancer-information/causes-and-prevention/early-detection-and-screening/early-detection-of-bowel-cancer

  Bowel (or colorectal) cancer occurs in the colon or rectum. It is the second most common cancer in Australia (not including non-melanoma skin cancer). Around 14,000 new cases of bowel cancer are diagnosed each year in Australia. […] If detected early, the chance of successful treatment and long-term survival improves significantly. […] Not all bowel cancers show symptoms. Experiencing symptoms does not necessarily mean you have bowel cancer. However, you should see your doctor if you notice: bleeding from the back passage or any sign of blood after a bowel motion; a change in usual bowel habit, such as straining (constipation) to go to the toilet or loose motions (diarrhoea); abdominal pain or bloating; weight loss for no obvious reason, or loss of appetite; symptoms of anaemia, including unexplained tiredness, weakness or breathlessness.

• #4 Early detection of bowel cancer | Cancer Council

  https://www.cancer.org.au/cancer-information/causes-and-prevention/early-detection-and-screening/early-detection-of-bowel-cancer

  Bowel cancer can be detected using a variety of methods. A faecal occult blood test (FOBT) is a simple test that can be done at home and looks for hidden traces of blood in a bowel motion. It can help detect bowel cancer in its early stages in people without symptoms. […] Colonoscopy is usually performed under sedation as day procedure. It is also used as a surveillance test for people at increased risk of developing bowel cancer. […] Sigmoidoscopy is similar to colonoscopy, however it only explores the lower part of the bowel, where cancer is more likely to develop. If a pre-cancerous polyp is detected during the procedure, a full bowel examination by colonoscopy is usually needed.

• #5 Symptoms of bowel cancer – NHS

  https://www.nhs.uk/conditions/bowel-cancer/symptoms/

  Symptoms of bowel cancer may include: changes in your poo, such as having softer poo, diarrhoea or constipation that is not usual for you […] blood in your poo, which may look red or black […] bleeding from your bottom […] often feeling like you need to poo, even if you’ve just been to the toilet […] tummy pain […] a lump in your tummy […] bloating […] losing weight without trying […] feeling very tired or short of breath these are signs of anaemia, which can be caused by bowel cancer. […] You have any symptoms of bowel cancer for 3 weeks or more. […] Your poo is black or dark red […] you have bloody diarrhoea. […] You’re bleeding non-stop from your bottom […] there’s a lot of blood, for example, the toilet water turns red or you see large blood clots. […] Having the symptoms does not definitely mean you have bowel cancer, but it’s important to get checked by a GP.

• #5 Symptoms of bowel cancer – NHS

  https://www.nhs.uk/conditions/bowel-cancer/symptoms/

  If your symptoms are caused by cancer, finding it early may mean it’s easier to treat. […] You may be asked for a poo sample (stool sample) for testing, or be given a home test kit called a faecal immunochemical test (FIT), to collect a small sample of poo and send it to a lab. These check if you’re bleeding from your bowel, which can be a sign of bowel cancer. […] You may get an urgent referral for more tests or to see a specialist in hospital if the GP thinks you have symptoms that could be cancer. This does not definitely mean you have cancer.

• #6 Symptoms of bowel cancer | Cancer Research UK

  https://www.cancerresearchuk.org/about-cancer/bowel-cancer/symptoms

  Symptoms of bowel cancer can include a change in your normal bowel habit or blood in your poo. These can also be symptoms for other conditions, but its important to see your doctor. […] The symptoms can include: A change in your normal bowel habit – such as needing to go for a poo more often, or feeling like you haven’t emptied your bowels properly. Bleeding from your bottom or blood in your poo. Losing weight when you haven’t been trying to. A pain or lump in your tummy. Feeling a lot more tired than usual. Feeling breathless. […] The symptoms of bowel (colorectal) cancer can include: bleeding from the back passage (rectum) or blood in your poo, a change in your normal bowel habit, such as looser poo, pooing more often or constipation, a lump that your doctor can feel in your back passage or tummy (abdomen), a feeling of needing to strain in your back passage (as if you need to poo), even after opening your bowels, losing weight when you haven’t been trying to, pain in your abdomen or back passage, tiredness and breathlessness caused by a lower than normal level of red blood cells (anaemia).

• #6 Symptoms of bowel cancer | Cancer Research UK

  https://www.cancerresearchuk.org/about-cancer/bowel-cancer/symptoms

  Sometimes cancer can block the bowel. This is called a bowel obstruction. The symptoms include: cramping pains in the abdomen, feeling bloated, constipation and being unable to pass wind, being sick. […] Blood in your poo (stools or faeces) can be a sign of bowel cancer. But it is often due to other causes. […] It is important to go to your doctor if you have any bleeding and get checked. […] Go to see your GP if you are worried about any of the symptoms mentioned above.

• #7 Colon & Rectal Cancer Symptoms & Stages | UPMC Hillman Cancer Center

  https://hillman.upmc.com/cancer-care/colorectal-gi/types/colorectal

  Colorectal cancer can occur in any section of the large intestine or in the rectum. […] Some early warnings may include: Blood (bright red or very dark) in stool. Change in bowel habits. Diarrhea, constipation, or feeling the bowels don’t fully empty. Fatigue. Frequent gas pain, bloating, fullness, or cramps. Stools that are narrower than usual. Vomiting. Weight loss for no known reason. […] Colorectal cancers often begin as noncancerous polyps. Without treatment, these polyps can become cancer that grows deeper into the tissue. Cancer can also spread to other parts of the body. […] Colorectal staging in general ranges from stage 0 to stage IV: Stage 0 the cells are only in the inner lining and haven’t penetrated deeper. Doctors refer to this stage as cancer in situ. Stage I cancer is deeper in the muscle layer of the organ but hasn’t spread to lymph nodes. Stage II this stage can be A, B, or C. It depends on how far through the lining of the organ the tumor has grown. The cancer still hasn’t spread to any lymph nodes. Stage III this stage can be A, B, or C. At this stage, the cancer has grown deeper in the organ lining. It has also spread to surrounding lymph nodes. Stage IV the cancer has spread (metastasized) to other organs in the body. Cancer can spread through tissue, the lymph system, or blood.

• #8 Colorectal Cancer Symptoms and Signs

  https://www.cancercenter.com/cancer-types/colorectal-cancer/symptoms

  Systemic colorectal cancer symptoms may impact more than the digestive tract and affect the entire body. Common systemic symptoms of colorectal cancer at all stages include: Unexplained loss of appetite, Unexplained weight loss, Nausea, Vomiting, Jaundice, Anemia, Weakness, Fatigue. […] During stage 1 of colon cancer, no obvious signs or symptoms may have developed. As symptoms develop, they may vary depending on the tumor’s size and location in the large intestine. Early symptoms may affect only the colon and result in changes in bowel habits. As the cancer grows, it may spread, producing systemic symptoms that affect the whole body, such as fatigue and weight loss. Some changes in bowels habits that may be considered colon cancer signs include: Change in frequency of bowel movements, Constipation, Change in consistency of stool (loose or watery stools), Blood in stools (either as bright red spots or dark tar-like stools), Rectal bleeding, Abdominal pain, bloating or cramps, A persistent feeling of not being able to completely empty the bowels.

• #8 Colorectal Cancer Symptoms and Signs

  https://www.cancercenter.com/cancer-types/colorectal-cancer/symptoms

  The symptoms of rectal cancer may be similar to those of other bowel diseases, such as ulcerative colitis or Crohn’s disease. But while symptoms of inflammatory bowel disease may subside during periods of remission, rectal cancer symptoms may be more severe and persistent as the cancer develops. Tumors in the rectum may change the consistency, shape or the frequency of bowel movements. Symptoms may increase and become more severe as the cancer spreads throughout the rectum or possibly into the colon. Rectal cancer signs related to bowel habits may include: Diarrhea, Constipation, An inability to completely empty the bowel, Bloody stool, Change in the size or shape of stools. […] Patients with metastatic colorectal cancer may not always notice symptoms before a diagnosis. Metastatic colorectal cancer symptoms may depend on the size of the tumor or tumors and where the cancer has spread outside the colon or rectum.

• #9 Colorectal Cancer Signs and Symptoms | Signs of Colorectal Cancer | American Cancer Society

  https://www.cancer.org/cancer/types/colon-rectal-cancer/detection-diagnosis-staging/signs-and-symptoms.html

  Colorectal cancer might not cause symptoms right away, but if it does, it may cause one or more of these symptoms. […] A change in bowel habits, such as diarrhea, constipation, or narrowing of the stool, that lasts for more than a few days. […] A feeling that you need to have a bowel movement thats not relieved by having one. […] Rectal bleeding with bright red blood. […] Blood in the stool, which might make the stool look dark brown or black. […] Cramping or abdominal (belly) pain. […] Weakness and fatigue. […] Unintended weight loss. […] Colorectal cancers can often bleed into the digestive tract. Sometimes the blood can be seen in the stool or make it look darker, but often the stool looks normal. But over time, the blood loss can build up and can lead to low red blood cell counts (anemia). Sometimes the first sign of colorectal cancer is a blood test showing a low red blood cell count.

• #9 Colorectal Cancer Signs and Symptoms | Signs of Colorectal Cancer | American Cancer Society

  https://www.cancer.org/cancer/types/colon-rectal-cancer/detection-diagnosis-staging/signs-and-symptoms.html

  Some people may have signs that the cancer has spread to the liver with a large liver felt on exam, jaundice (yellowing of the skin or whites of the eyes), or trouble breathing from cancer spread to the lungs. […] Most people with polyps will not have any symptoms. However, some people may have symptoms from polyps, such as: Bleeding from the rectum. […] Change in stool color, either red or black. […] Change in bowel movement, either prolonged constipation or diarrhea. […] Low red blood cell count due to low iron (iron deficiency anemia). […] Abdominal (belly) pain. […] Many of these symptoms can be caused by conditions other than colorectal cancer, such as infection, hemorrhoids, or irritable bowel syndrome. Still, if you have any of these problems, its important to see your doctor right away so the cause can be found and treated, if needed.

• #10

  https://www2.hse.ie/conditions/bowel-cancer/

  Bowel cancer is also known as colon cancer, rectal cancer or colorectal cancer. […] Symptoms of bowel cancer may include: changes in your poo, such as having softer poo, diarrhoea or constipation that is not usual for you […] blood in your poo, which may look red or black […] bleeding from your bottom […] tummy pain […] feeling a lump anywhere in your tummy […] bloating […] if you are losing weight for no reason […] feeling very tired for no reason […] breathlessness. […] Having these symptoms does not always mean you have bowel cancer. […] If your symptoms are caused by cancer, finding cancer early may mean it’s easier to treat. […] Your GP will ask about your symptoms and if you have a family history of bowel cancer. […] Your GP may refer you to hospital for further tests.

• #11 Signs and symptoms of bowel cancer | Bowel Cancer UK

  https://www.bowelcanceruk.org.uk/about-bowel-cancer/symptoms/

  Knowing the symptoms is important to help spot bowel cancer early. The earlier that its found, the more treatable its likely to be. […] Bowel cancer can affect anyone, whatever your age, gender, ethnicity or where you live. […] Symptoms can include: bleeding from your bottom, blood in your poo, a change in your pooing habits. You might be going more or less often, or have diarrhoea or constipation that might come and go, losing weight but you’re not sure why, feeling very tired all the time but you’re not sure why, a pain or lump in your tummy. […] If you have any of these symptoms, or if you’re worried about any changes that you notice, visit your GP and ask about an at-home test. […] Seeing your GP as soon as you can when you have symptoms can help to diagnose bowel cancer early. The earlier that bowel cancer is diagnosed, the more treatable its likely to be.

• #11 Signs and symptoms of bowel cancer | Bowel Cancer UK

  https://www.bowelcanceruk.org.uk/about-bowel-cancer/symptoms/

  If you are feeling very tired all the time (fatigue) but don’t know why, it is important to speak with your GP so they can help you find the cause. […] You may have pain or a lump in your tummy (abdomen). If the pain or lump doesn’t go away or affects how you sleep or eat, speak to your GP. […] If you think you have a bowel obstruction, are in a lot of pain, or feeling very unwell, call NHS 111 for advice or go to a hospital accident and emergency department.

• #12 Bowel cancer symptoms | Macmillan Cancer Support

  https://www.macmillan.org.uk/cancer-information-and-support/bowel-cancer/signs-and-symptoms-of-bowel-cancer

  Common symptoms of bowel cancer (colon or rectal cancer) include blood in your poo, a change in your normal bowel habit and unexplained weight loss. […] The symptoms of bowel cancer include: blood in or on your poo (stools), or bleeding from the back passage (rectum) the blood may be bright red or dark, a change in your normal bowel habit that happens for no obvious reason and lasts longer than 3 weeks for example, diarrhoea or constipation, unexplained weight loss, pain in your tummy (abdomen) or back passage, feeling that you have not emptied your bowel properly after you poo, a lower than normal level of red blood cells (anaemia), unexplained tiredness, dizziness or breathlessness caused by anaemia. […] Sometimes the cancer can cause a blockage (obstruction) in the bowel or rectum. You may: feel constipated and bloated, have tummy pain, be sick (vomit).

• #13 Symptoms of Colorectal Cancer | Colorectal Cancer | CDC

  https://www.cdc.gov/colorectal-cancer/symptoms/index.html

  Colorectal cancer may cause several symptoms. […] Abdominal pain, aches, or cramps may be symptoms of colorectal cancer. […] Colorectal polyps (abnormal growths in the colon or rectum that can turn into cancer if not removed) and colorectal cancer don’t always cause symptoms, especially at first. […] If you have symptoms, they may include: A change in bowel habits. […] Blood in or on your stool (bowel movement). […] Diarrhea, constipation, or feeling that the bowel does not empty all the way. […] Abdominal pain, aches, or cramps that don’t go away. […] Weight loss and you don’t know why. […] If you have any of these symptoms, talk to your doctor.

• #14 Understanding the Symptoms of Colon Cancer at Different Stages

  https://www.curasia.com/understanding-the-symptoms-of-colon-cancer-at-different-stages/

  Some of the early symptoms include: Changes in bowel habits: This can include persistent diarrhea or constipation, or a change in stool consistency that lasts longer than a few days. Abdominal discomfort: Some patients may experience cramping, bloating, or mild abdominal pain. Fatigue: Unexplained fatigue may occur as the body’s energy is diverted to fight the growing tumor. […] As colon cancer progresses to stage II and stage III, the tumor has grown larger and may have begun to invade nearby tissues or lymph nodes. […] At this point, colon cancer symptoms become more noticeable and harder to ignore. Common symptoms during these intermediate stages include: Rectal bleeding or blood in the stool: One of the most common and alarming symptoms of colon cancer is rectal bleeding or finding blood in the stool. The blood may appear bright red or dark and tar-like, depending on its location in the colon. Persistent abdominal pain: The abdominal discomfort that was mild in earlier stages may become more persistent and intense. Unexplained weight loss: Sudden, unintentional weight loss can be a sign that the body is using more energy to fight the tumor. Changes in stool shape: Narrow stools, sometimes referred to as pencil-thin stools, can indicate that a tumor is obstructing part of the colon.

• #14 Understanding the Symptoms of Colon Cancer at Different Stages

  https://www.curasia.com/understanding-the-symptoms-of-colon-cancer-at-different-stages/

  By the time colon cancer reaches stage IV, it has spread to other parts of the body, most commonly the liver, lungs, or distant lymph nodes. […] At this advanced stage, colon cancer symptoms are typically severe and can affect multiple systems in the body. Severe abdominal pain and discomfort: As the tumor grows and potentially obstructs the colon, the pain can become intense and continuous. Chronic constipation or bowel obstruction: In some cases, the tumor can cause a complete blockage of the colon, resulting in an inability to pass stool. Jaundice: If the cancer has spread to the liver, patients may develop jaundice, which causes yellowing of the skin and eyes. Difficulty breathing: If the cancer has metastasized to the lungs, patients may experience shortness of breath, chest pain, or a persistent cough. Fatigue and weakness: As the cancer spreads, the body becomes increasingly fatigued, and patients may feel weak and lethargic even after rest.

• #14 Understanding the Symptoms of Colon Cancer at Different Stages

  https://www.curasia.com/understanding-the-symptoms-of-colon-cancer-at-different-stages/

  Colon cancer can present with a wide range of symptoms, from subtle changes in bowel habits in the early stages to severe pain and systemic issues in advanced cases. […] Being aware of the various colon cancer symptoms at different stages can empower individuals to seek medical help early, which is key to improving outcomes. Regular screenings, especially for those with risk factors, play a crucial role in catching the disease before symptoms even appear, underscoring the importance of preventive healthcare.

• #15 Colon Cancer: Symptoms, Stages & Treatment

  https://my.clevelandclinic.org/health/diseases/14501-colorectal-colon-cancer

  Persistent changes in your bowel habits (how you poop): Talk to a healthcare provider if you have persistent constipation and/or diarrhea, or if you feel as if you still need to poop after going to the bathroom. […] Abdominal (belly) pain: Talk to a healthcare provider if you have belly pain with no known cause, that doesn’t go away or hurts a lot. […] Bloated stomach: Like belly pain, there are many things that may make you feel bloated. Talk to a healthcare provider if your bloated belly lasts for more than a week, gets worse or you have other symptoms like vomiting or blood in or on your poop. […] Unexplained weight loss: This is a noticeable drop in your body weight when you’re not trying to lose weight. […] Vomiting: Talk to a healthcare provider if you’ve been vomiting periodically for no known reason or if you vomit a lot in 24 hours.

• #15 Colon Cancer: Symptoms, Stages & Treatment

  https://my.clevelandclinic.org/health/diseases/14501-colorectal-colon-cancer

  Colon cancer develops from certain polyps or growths in the inner lining of your colon. […] Colon cancer that’s not detected or treated may spread to other areas of your body. […] Over time, colon polyps may become cancerous. (It usually takes about 10 years for cancer to form in a colon polyp.) Left undetected and/or untreated, the cancer works its way through a layer of tissue, muscle and the outer layer of your colon. The colon cancer may also spread to other parts of your body via your lymph nodes or your blood vessels. […] You can have colon cancer without having symptoms. If you do have symptoms, you may not be sure if changes in your body are signs of colon cancer. […] Common symptoms of colon cancer include: Blood on or in your stool (poop): Talk to a healthcare provider if you notice blood in the toilet after you poop or after wiping, or if your poop looks dark or bright red.

• #15 Colon Cancer: Symptoms, Stages & Treatment

  https://my.clevelandclinic.org/health/diseases/14501-colorectal-colon-cancer

  Fatigue and feeling short of breath: These are symptoms of anemia. Anemia may be a sign of colon cancer. […] Healthcare providers use several tests to diagnose colon cancer. […] A cancer screening test checks for cancer when you don’t have any signs or symptoms of cancer. […] There are five stages of colon cancer. […] Stage IV: Cancer has spread (metastasized) to other areas of your body, such as your liver, lungs or ovaries. […] People treated for early-stage colon cancer may become cancer-free. […] Anyone recovering from colon cancer treatment should contact their healthcare provider if they notice changes that may indicate the cancer has come back or is spreading.

• #16 Bowel cancer | Better Health Channel

  https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/bowel-cancer

  Bowel cancer can develop with no symptoms. So, it is important to participate in screening. […] In its early stages, bowel cancer may have no symptoms, but if detected early, it can be successfully treated. […] Symptoms may include: Blood in your poo or on the toilet paper, A change in your bowel habits, such as diarrhoea, constipation or smaller more frequent bowel movements, Feeling like you need to poo more often or the feeling of incomplete emptying, Feeling full or bloated in your belly or a strange sensation in the rectum, often during a bowel movement, A change in the appearance of your poo (such as thin stools), Losing weight for no obvious reason, Weakness or fatigue, Anal or rectal pain, A lump in the anus or rectum, A low red blood cell count (anaemia or iron deficiency), which can cause tiredness or weakness, Abdominal (stomach) pain or swelling, A blockage in the bowel.

• #17 Colon (Colorectal) Cancer Signs and Symptoms

  https://www.webmd.com/colorectal-cancer/understanding-colorectal-cancer-symptoms

  In its early stages, colorectal cancer (also called colon cancer), which is cancerous cell growth in your colon or rectum, may not have symptoms. Problems that cause symptoms usually start after it has spread. […] The symptoms of colon cancer can vary, depending on where the cancer is within the digestive tract. […] Symptoms of colon cancer can also vary based on the stage of the cancer. There are five stages of colon cancer, and three of the stages have three substages. […] Stage 0 colon cancer symptoms: Cancer in stage 0 is also known as carcinoma in situ. It’s found in the inner layer of your colon or rectum but hasn’t spread. There aren’t usually any symptoms at this stage. […] Stage I colon cancer symptoms: If you have stage I colon cancer, the cancer has spread through the lining (or mucosa) of your colon or rectum and may have grown into the muscle layer. At this stage, the cancer hasn’t reached your lymph nodes or other parts of the body. Your symptoms might include: Belly cramps or pain, Excess gas, Changes in poop shape or color, Bleeding from the rectum, Blood in your stool, Constipation, Diarrhea.

• #17 Colon (Colorectal) Cancer Signs and Symptoms

  https://www.webmd.com/colorectal-cancer/understanding-colorectal-cancer-symptoms

  Stage II colon cancer symptoms: At this stage, the cancer has spread into the walls of your colon or rectum and possibly into nearby tissues, but not to nearby lymph nodes. You might have symptoms like: Belly cramps or pain, Excess gas, Changes in poop shape or color, Bleeding from the rectum, Blood in your stool, Constipation, Diarrhea. […] Stage III colon cancer symptoms: At this stage, the cancer has grown to your lymph nodes. Some possible symptoms during stage III are: Unexplained weight loss, Fatigue, Weakness, Long-term changes in your stool, Not being able to empty your bowels, Vomiting. […] Stage IV colon cancer symptoms: In stage IV colon cancer, the cancer has spread to your organs. Your symptoms at this stage include: Jaundice, Swollen hands and feet, A hard time breathing, Chronic headaches, Blurry vision, Bone fractures.

• #17 Colon (Colorectal) Cancer Signs and Symptoms

  https://www.webmd.com/colorectal-cancer/understanding-colorectal-cancer-symptoms

  Pelvic pain and anemia (an unusually low number of red blood cells) because of bleeding in your intestines can also be symptoms of colon cancer. […] The signs and symptoms of colon cancer can vary, depending on the type, location, and stage of the cancer. Catching colon cancer early is key to treatment potential.

• #18 Colon Cancer and Poop: Signs to Look For

  https://www.verywellhealth.com/colon-cancer-and-poop-signs-to-watch-for-5094615

  In stage 3 colon cancer, the malignancy has spread to nearby lymph nodes. In this stage, changes in poop and bowel habits tend to become more apparent as the intestinal passageway (called the lumen) further narrows and the tumor starts to grow into deeper layers of the intestinal tissues. […] The progression of colon cancer can often be recognized by the following additional symptoms: Constipation: Due in part to increasing bowel obstruction, Diarrhea: Caused by an overflow of intestinal fluid around a partial obstruction, Alternating constipation and diarrhea: A more telling sign of colon cancer, Blood in stool: Also known as hematochezia, which can be bright red if the tumor is near the rectum or dark red or maroon if higher up in the colon, Tenesmus: Can occur as colon cancer progresses due to the persistent and increasing inflammation, Abdominal bloating and cramps: Due in part to the inability to pass gas when the bowel is obstructed, Symptoms of iron deficiency anemia: Occurs in around 48% of people with colon cancer.

• #19 Colon Cancer Symptoms | Baylor Scott & White Health

  https://www.bswhealth.com/conditions/colon-cancer/symptoms

  If you notice changes in your stools size, shape or consistency, it could be a sign of cancer. With colon cancer, its more common to have very narrow, stringy or thin stool. […] If colon cancer causes pressure or inflammation in your colon, it can start to cause persistent abdominal pain. This includes achy pain, dull discomfort or feeling bloated. […] As colon cancer grows and spreads, it changes how you absorb nutrients, increases inflammation, leads to other conditions like anemia, or affects normal hormone levels. As a result, some of the most common systemic symptoms of colon cancer are weight loss, changes in appetite and general fatigue or weakness. […] Many changes caused by colon cancer lead to unintentional weight loss. For example, ongoing symptoms like diarrhea often make you feel like not eating as much.

• #19 Colon Cancer Symptoms | Baylor Scott & White Health

  https://www.bswhealth.com/conditions/colon-cancer/symptoms

  While occasional fatigue happens for many reasons, colon cancer may cause ongoing exhaustion, fatigue and weakness. This type of fatigue doesnt get better with rest or additional sleep. […] The digestive symptoms of colon cancer, such as changes in bowel habits, often lead to a loss of appetite. As colon cancer grows, it can also make you feel full even when you havent eaten much food. […] Symptoms of advanced-stage colon cancer happen when the cancer continues to spread in the body. These symptoms are more common when the cancer has reached colon cancer stages 3 and 4. […] Your abdomen can swell due to the growing size of a tumor in your colon. Swelling in the abdomen can also be a sign that colon cancer has spread to the liver, causing fluid to build up. […] If the cancer spreads to the lungs, you may have respiratory changes and feel its hard to breathe. Lung cancer symptoms include getting short of breath, chest pressure and coughing.

• #19 Colon Cancer Symptoms | Baylor Scott & White Health

  https://www.bswhealth.com/conditions/colon-cancer/symptoms

  Its better to see a doctor for colon cancer symptoms and rectal cancer symptoms sooner rather than later. While another digestive condition may be causing your symptoms, you should get checked for any colon cancer symptoms. […] Colon cancer can go undetected for several years. Most types of colon cancer grow slowly. That means it may develop over many years and not cause any symptoms. […] Sometimes, colon cancer symptoms dont appear until the cancer has grown or spread. Many people miss early warning signs or dont have symptoms of colon cancer until the cancer has reached stage 2 or beyond. […] Not usually. Because colon cancer tends to grow slowly, you may not have any symptoms during the early stages, or they may develop over time. The most common sudden early signs of colon cancer are weight loss or very narrow, ribbon-shaped stools. […] Yes. Most of the time, colon cancer symptoms are persistent, meaning they continue to happen, and you dont have periods where you feel better. Some main signs of colon cancer are ongoing changes in bowel habits or abdominal discomfort.

• #20 Stage IV Colon Cancer Symptoms and Tests

  https://www.webmd.com/colorectal-cancer/colon-cancer-liver-metastasis-symptoms

  Your doctor will use tests to diagnose and learn the stage of your colon cancer. The stage tells whether it has spread and how far. […] Stage IV means your disease has traveled beyond your colon. You could have cancer cells in your liver, lungs, or other organs. Knowing where it has spread will help pinpoint the treatment that will work best for you. […] Many people with colon cancer don’t have symptoms. That’s why it is so important to keep up with routine screening tests. […] When the disease — at any stage — causes symptoms, they may include: Blood (usually dark red or black) in the stool […] Long, thin, pencil-like stools. These are a sign that something is blocking your colon. The blockage could be a tumor or something else. […] Fatigue and weakness. Feeling much more tired or weak than usual could be a sign that the tumor is bleeding and you’ve lost iron.

• #20 Stage IV Colon Cancer Symptoms and Tests

  https://www.webmd.com/colorectal-cancer/colon-cancer-liver-metastasis-symptoms

  Abdominal pain or bloating. Colon tumors can cause a blockage that makes it hard to fully empty your bowels. You can feel bloated and full as a result. […] Unexplained weight loss. A weight loss of 10 pounds or more, when you haven’t changed your diet and exercise habits, could be cancer, especially if you also have other colon cancer symptoms. […] Nausea and vomiting, which may happen if the tumor causes an obstruction. […] Other symptoms you have depend on where the cancer has spread. […] In the U.S., 20% of people who find out they have colon cancer learn that it has spread to distant parts of their body. Cancer can also spread „locally” through the lymph nodes and bloodstream. Colon cancer most often spreads to the liver, lungs, and peritoneum (the lining of the abdomen). This cancer can also reach the bones and other organs.

• #20 Stage IV Colon Cancer Symptoms and Tests

  https://www.webmd.com/colorectal-cancer/colon-cancer-liver-metastasis-symptoms

  Many people don’t have symptoms at first, if colon cancer is in their liver. If they do have symptoms, they may be vague and can include: Loss of appetite or feeling full early […] Fatigue […] Pain in the abdomen […] Weight loss. […] Because the lungs get blood flow from the rest of the body, cancer can travel there from other organs, including the colon. Cancer that has spread to the lungs often affects breathing. […] Symptoms include: A cough that doesn’t go away […] Chest pain […] Trouble breathing. […] Cancer cells that break off from the main tumor can get into the lining of the abdomen. Symptoms include: Pain in the belly […] Weight loss or gain. […] When colon cancer travels to the bones, it can weaken them and cause them to release stored calcium. Symptoms include: Bone pain […] Numbness or weakness in the legs and possibly the arms.

• #21 Understanding Stage 5 Colon Cancer Symptoms – Colon & Rectal Surgery – New York

  https://colonandrectalsurgeryofnewyork.com/understanding-stage-5-colon-cancer-symptoms/

  Colon cancer, also known as colorectal cancer, progresses through various stages. However, the term Stage 5 colon cancer is not a standard medical classification. Most likely, people referring to Stage 5 mean an advanced Stage 4 cancer, indicating further metastasis and severe symptoms. […] Stage 4 colon cancer is the most advanced form of the disease. At this stage, the cancer has spread (metastasized) to distant organs and tissues, such as the liver, lungs, or distant lymph nodes. The symptoms experienced by patients at this stage are often severe and can significantly impact their quality of life. […] Key Symptoms of Advanced Stage 4 Colon Cancer: Persistent Abdominal Pain and Discomfort. Patients may experience ongoing pain or cramping in the abdominal region. This discomfort is often due to the tumor causing blockages or pressing against other organs. […] Changes in Bowel Habits. Noticeable changes in bowel movements, including chronic constipation, diarrhea, or a feeling that the bowel doesn’t empty completely, are common. These changes occur because the tumor obstructs the bowel. […] Rectal Bleeding or Blood in Stool. Blood in the stool may appear bright red or very dark, which is a significant symptom. It may indicate bleeding in the gastrointestinal tract caused by the tumor. […] Weight Loss. Sudden and unexplained weight loss is a warning sign. The body may lose weight due to the cancer consuming a significant amount of energy and nutrients. […] Fatigue and Weakness. Persistent fatigue and a general feeling of weakness are common in advanced colon cancer. This fatigue results from the body’s efforts to fight cancer and the effects of anemia due to internal bleeding. […] Nausea and Vomiting. These symptoms often occur when the tumor causes a bowel obstruction, preventing the typical passage of food and waste. […] Jaundice. If the cancer has spread to the liver, jaundice (yellowing of the skin and eyes) can occur. This symptom indicates liver dysfunction caused by metastatic tumors. […] Breathlessness and Cough. When colon cancer metastasizes to the lungs, patients might experience respiratory symptoms like chronic cough and difficulty breathing.

• #22 Bowel cancer | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/cancer/cancer-types-in-adults/bowel-cancer/

  In some cases, bowel cancer can stop digestive waste passing through the bowel. This is known as a bowel obstruction. Symptoms of a bowel obstruction can include: severe abdominal pain, which may initially come and go; not being able to poo when you go to the toilet; noticeable swelling or bloating of the tummy; vomiting. […] Your chances of developing bowel cancer increase as you get older. Almost 9 out of 10 cases of bowel cancer in the UK are diagnosed in people over the age of 60. […] Most cases of bowel cancer develop inside clumps of cells on the inner lining of the bowel first. These clumps are known as polyps. However, if you develop polyps, it does not necessarily mean you will get bowel cancer. […] Once the above examinations and tests have been completed, it should be possible to determine the stage and grade of your cancer. Staging refers to how far your cancer has advanced. Grading relates to how aggressive your cancer is and how likely it is to spread.

• #22 Bowel cancer | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/cancer/cancer-types-in-adults/bowel-cancer/

  If colon cancer is at a very early stage, it may be possible to remove just a small piece of the lining of the colon wall. This is known as local excision. If the cancer spreads into muscles surrounding the colon, it will usually be necessary to remove an entire section of your colon. This is known as a colectomy. […] A colonoscopy is an examination of your entire large bowel using a device called a colonoscope. This is like a sigmoidoscope but a bit longer. […] There are 3 ways chemotherapy can be used to treat bowel cancer: before surgery used in combination with radiotherapy to shrink the tumour; after surgery to reduce the risk of the cancer recurring; palliative chemotherapy to slow the spread of advanced bowel cancer and help control symptoms.

• #23 Symptoms of metastatic bowel cancer | Cancer Research UK

  https://www.cancerresearchuk.org/about-cancer/bowel-cancer/advanced/symptoms-metastatic-cancer

  Metastatic bowel cancer is cancer that started in either the back passage (rectum) or large bowel (colon) and has spread to another part of the body. It is also called advanced cancer. […] The symptoms of metastatic bowel cancer can be similar to bowel cancer that hasn’t spread. Other symptoms depend on which part of the body the cancer has spread to. […] General symptoms of metastatic bowel cancer can include: feeling tired, low energy levels, having less appetite. […] You might have any of these symptoms if the cancer has spread to your liver: discomfort or pain on the right side of your abdomen, feeling sick, poor appetite and weight loss, swollen abdomen (called ascites), yellowing of the skin (jaundice), itchy skin. […] You may have any of these symptoms if cancer has spread to your lungs: a cough that doesn’t go away, breathlessness, coughing up blood, a build up of fluid between the chest wall and the lung (a pleural effusion).

• #24 Symptoms of metastatic bowel cancer | Cancer Research UK

  https://www.cancerresearchuk.org/about-cancer/bowel-cancer/advanced/symptoms-metastatic-cancer

  You may have any of these symptoms if your cancer has spread to the bones: an ache or pain in the affected bone, a weakened bone which is more prone to break or fracture. […] Sometimes when bones are damaged by metastatic cancer, the bones release calcium into the blood. This is called hypercalcaemia and can cause various symptoms such as: tiredness, feeling sick (nausea), constipation, irritability, thirst, confusion. […] Symptoms of metastatic bowel cancer can include sickness, pain, loss of appetite and bowel problems. There are treatments that can help.

• #25 Symptoms of Bowel Cancer. Booking Health

  https://bookinghealth.com/blog/diagnoses-and-treatment/diagnosis-and-treatment/332276-symptoms-of-bowel-cancer.html

  Such symptoms of bowel cancer in the early stages are most characteristic for neoplasm located in the right half of the intestine. In the ascending part of the large intestine, there are many villi, through which nutrients enter the bloodstream. As a result, the products of tumor disintegration penetrate into the systemic blood stream and symptoms of intoxication develop. […] Based on which bowel cancer symptoms appear first, the disease is divided into several clinical forms. […] Symptoms associated with intestinal obstruction are more likely to develop if bowel cancer is located in the left colon. It automatically blocks the movement of stool. At the initial stage of cancer the person suffers from constipation. Later on, complete intestinal obstruction occurs. […] In bowel cancer, symptoms are sometimes not determined at all. The patient does not complain about anything. The first clinical sign, which is detected by an objective examination, is a palpable formation in the abdomen. This form of the disease is also called atypical, because a palpable tumor, as the first symptom of bowel cancer, is very rare.

• #25 Symptoms of Bowel Cancer. Booking Health

  https://bookinghealth.com/blog/diagnoses-and-treatment/diagnosis-and-treatment/332276-symptoms-of-bowel-cancer.html

  Since bowel cancer is symptomatically nonspecific, it can be difficult to detect. Obviously, the doctor does not send every patient with an abdominal pain for a biopsy. Even if blood is detected in the stool, the doctor will rather think about the inflammatory process rather than the tumor, because intestinal inflammations are more common than malignant neoplasms. […] A high risk group means that the probability of detecting bowel cancer during diagnosis is 70-80%. […] All these symptoms occur quite often in bowel cancer. They usually alert the doctor about an oncological risk. The patient is advised to undergo examination aimed at detecting the tumor and determining its histological type. […] During the diagnosis, the doctor is able to distinguish different diseases that have similar clinical signs. A good oncologist or gastroenterologist always knows what symptoms of bowel cancer distinguish it from stomach cancer. […] In rectal cancer: The main symptom is rectal bleeding. […] Despite a lot of common symptoms (constipation, intestinal obstruction, anemia, bleeding), some signs of rectal and bowel cancer are fundamentally different.

• #26 Rectal cancer – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/rectal-cancer/symptoms-causes/syc-20352884

  Rectal cancer may not cause symptoms early on. Symptoms of rectal cancer usually happen when the disease is advanced. […] Signs and symptoms of rectal cancer include: A change in bowel habits, such as diarrhea, constipation or a more-frequent need to pass stool. A feeling that the bowel doesn’t empty completely. Abdominal pain. Dark maroon or bright red blood in stool. Narrow stool. Weight loss that happens without trying. Weakness or fatigue.

• #27 What are the symptoms of bowel cancer? | Cancer Australia

  https://www.canceraustralia.gov.au/cancer-types/bowel-cancer/what-are-symptoms-bowel-cancer

  Bowel cancer often has no early symptoms, but common signs include blood in stools, changes in bowel habits, abdominal pain, vomiting, weight loss, and unexplained tiredness. […] Bowel cancer is usually a slow-growing cancer. There are often no symptoms in the early stages of the disease. The most common symptoms of bowel cancer are: blood in the stools; this might be bright red if the bleeding is in the rectum, or might make the stools look dark brown or black if the bleeding is somewhere else in the digestive tract; a change in bowel habit (loose stools, constipation or stools that are narrower than usual); a feeling that you need to have a bowel movement even after you have had one; abdominal pain, cramping or bloating; vomiting; weight loss; unexplained tiredness or fatigue. […] The first sign of bowel cancer is sometimes a blood test showing a low red blood cell count, as a result of bleeding into the digestive tract. […] Many conditions can cause these symptoms, not just bowel cancer. If you have any of these symptoms, talk to your doctor. Bleeding from the rectum should never be ignored.

• #28 Bowel cancer | Causes, Symptoms & Treatments | Cancer Council

  https://www.cancer.org.au/cancer-information/types-of-cancer/bowel-cancer

  Bowel cancer, also known as colorectal cancer, colon cancer or rectal cancer, develops from the inner lining of the bowel. It is usually preceded by growths called polyps, which may become invasive cancer if undetected. […] Symptoms of bowel cancer include: change in bowel habit including diarrhoea, constipation or the feeling of incomplete emptying, a change in the appearance or consistency of bowel movements such as thin bowel stools, blood in the stools, abdominal pain, bloating or cramping, anal or rectal pain, a lump in the anus or rectum, weight loss, unexplained fatigue, tiredness and/or anaemia (pale complexion, weakness and breathlessness), blood in the urine or passing urine frequently or during the night, change in urine colour dark, rusty or brown. […] Prognosis refers to the expected outcome of a disease. It is not possible for any doctor to predict the exact course of the disease. An individual’s prognosis depends on the type and stage of cancer, as well as their age and general health at the time of diagnosis. This information will also help your doctor to advise on the best treatment options. Generally, the earlier bowel cancer is diagnosed, the better the outcomes.

• #29 Bowel Cancer Symptoms

  https://www.bowelcanceraustralia.org/bowel-cancer/symptoms/

  Not everyone experiences symptoms, particularly in the early stages of bowel cancer. […] The common symptoms may be suggestive of bowel cancer, but they can also be due to other medical conditions, some foods or medicines. […] Blood in your poo or rectal bleeding is not normal and should never be ignored. […] Common symptoms can include: Blood in your poo or rectal bleeding Bright red or very dark blood should never be ignored; A recent, persistent change in bowel habit Such as looser, more diarrhoea-like poo, constipation, or going to the toilet more often, or trying to go irregularity in someone whose bowel habits have previously been regular; A change in shape or appearance of your poo For example, narrower poos than usual or mucus in poo; Frequent gas pain, cramps A feeling of fullness or bloating in the bowel or rectum; Unexplained anaemia A low red blood count causing tiredness, weakness or weight loss; A feeling that the bowel has not emptied completely after going to the toilet; Pain or a lump in the anus or rectum; Abdominal pain or swelling.

• #30 Bowel cancer

  https://www.cancervic.org.au/cancer-information/types-of-cancer/bowel_cancer/bowel-cancer.html

  Talk to your doctor if you have any of these symptoms, especially if they are ongoing, get worse, or if there is any bleeding: blood in or on faeces (poo) or on the toilet paper; this might be bright red or make the poo look dark brown or black. […] A persistent or unexplained change in bowel habits, such as diarrhoea or loose stools, constipation or smaller, more frequent bowel movements. […] A change in the look of faeces (e.g. narrower or with mucus). […] A feeling of fullness or bloating in the abdomen (belly) or a strange sensation in the rectum, often during a bowel movement. […] Feeling that the bowel hasn’t emptied completely after you have done a poo. […] Losing weight without trying. […] Rectal or anal pain. […] A lump in the rectum or anus. […] Abdominal pain or swelling. […] Weakness or fatigue, dizziness or breathlessness. […] A low red blood cell count (anaemia or iron deficiency). […] A blockage in the bowel.

• #30 Bowel cancer

  https://www.cancervic.org.au/cancer-information/types-of-cancer/bowel_cancer/bowel-cancer.html

  Bowel cancer (also called colorectal cancer) is cancer in any part of the large bowel (colon or rectum). It may also be called colon cancer or rectal cancer, depending on where in the bowel it is. […] The cancer starts in the lining of the inner bowel wall (called the mucosa). It usually develops from small growths called polyps. Most polyps are harmless (benign), but some may turn into cancer. […] Removing polyps during a colonoscopy reduces the risk of bowel cancer. If untreated, bowel cancer can grow into the deeper layers of the bowel wall. It can also spread to the lymph nodes. […] If the cancer advances further, it can spread to other organs, such as the liver or the lungs. […] Some people have no symptoms and the cancer is found through screening. However, many people with bowel cancer experience some of the symptoms listed below.

• #31 Colon Cancer Symptoms, Survival Rate, Treatment & Stages

  https://www.emedicinehealth.com/colon_cancer/article_em.htm

  Symptoms of colon cancer may not be present or be minimal and overlooked until it becomes more severe. […] If you have any of these symptoms, seek immediate medical help. You may notice bleeding from your rectum or blood mixed with your stool (poop). […] Bloody stools may be an early sign of colon cancer. New onset of bright red blood in the stool always deserves an evaluation. […] Rectal bleeding may be hidden and chronic and may only show up as an iron deficiency anemia. […] Changes in bowel movement frequency […] If the tumor gets large enough, it may completely or partially block your colon. You may notice the following symptoms of bowel obstruction: Abdominal distension: Your belly sticks out more than it did before without weight gain. […] Abdominal pain: This is rare in colon cancer.

• #31 Colon Cancer Symptoms, Survival Rate, Treatment & Stages

  https://www.emedicinehealth.com/colon_cancer/article_em.htm

  Unexplained, persistent nausea or vomiting […] Unexplained weight loss […] Change in frequency or character of stool (bowel movements) […] Small-caliber (narrow) or ribbon-like stools […] Constipation […] Sensation of incomplete evacuation after a bowel movement […] Studies suggest that the average duration of symptoms (from onset to diagnosis) is 14 weeks. […] Any of the following symptoms warrants an immediate visit to your health care provider: Bright red blood on the toilet paper, in the toilet bowl, or in your stool when you have a bowel movement […] Change in the character or frequency of your bowel movements […] Sensation of incomplete evacuation after a bowel movement […] Unexplained or persistent abdominal pain or distension […] Unexplained weight loss […] Unexplained, persistent nausea or vomiting.

• #32 Colorectal Cancer Symptoms | The University of Kansas Cancer Center

  https://www.kucancercenter.org/cancer/cancer-types/colorectal-cancer/colorectal-cancer-symptoms-risks

  Severe abdominal pain […] Loss of appetite […] Vomiting. […] Speak with your doctor if you have a history of colon cancer or a genetic abnormality known to increase your risk of colon cancer. Regardless of age, you should make an appointment with your doctor if you have symptoms lasting longer than 1-2 weeks. Symptoms include: […] Change in bowel habits […] Blood in your stool or very dark, tarry-looking stools […] Unexplained weight loss. Early detection is key. Be sure to listen to your body and advocate for yourself.

• #33 Signs and symptoms of bowel cancer | What to look out for

  https://www.wcrf.org/preventing-cancer/cancer-types/bowel-cancer/symptoms-of-bowel-cancer/

  Other symptoms of bowel cancer include: Loss of appetite or losing weight without trying to, Fatigue and breathlessness, A pain or lump in your tummy or back passage, Needing to strain, even after emptying your bowels. […] If you suffer from any of these symptoms for more than 3 weeks, you should book an appointment with your GP. […] Bowel obstruction is when cancer creates a blockage in the bowel, which can stop waste (poo) being passed through the bowel. […] Bowel obstructions are medical emergencies. If you think you’re experiencing a bowel obstruction you should go to your nearest AE department.

• #34 How Long Do Colon Cancer Symptoms Take to Appear?

  https://www.curasia.com/how-long-do-colon-cancer-symptoms-take-to-appear-insights-into-progression/

  In some individuals, symptoms may not appear until the cancer has reached an advanced stage, which is why routine screening remains critical. For others, signs such as changes in bowel habits, blood in stools, or abdominal discomfort may manifest earlier. However, these symptoms are often subtle and easy to overlook. […] The timeline for colon cancer symptoms to appear varies from person to person, influenced by factors such as the individuals overall health, lifestyle, and the location of the tumor. On average, it can take several years for polyps to develop into cancer and for symptoms to present themselves. For some, colon cancer symptoms may take up to 10 years to appear, while others may notice signs earlier, depending on the progression of the disease. […] In the early stages of colon cancer, symptoms are often mild or non-existent. Many people may not experience noticeable changes in their digestive health. However, certain subtle signs could indicate the presence of an underlying issue. These early symptoms may include: Unexplained changes in bowel habits (constipation or diarrhea), Blood in stools (which may appear as bright red or dark, tar-like stools), Persistent abdominal discomfort, cramps, or bloating, Feeling that your bowel doesn’t empty completely.

• #34 How Long Do Colon Cancer Symptoms Take to Appear?

  https://www.curasia.com/how-long-do-colon-cancer-symptoms-take-to-appear-insights-into-progression/

  Colon cancer is one of the most common types of cancer worldwide, and early detection is critical for improving treatment outcomes. However, one of the key challenges in diagnosing colon cancer is that its symptoms often take time to appear. This delayed onset can lead to the disease progressing unnoticed for months or even years. […] Understanding the timeline of colon cancer development, its risk factors, and recognizing when symptoms typically begin to show can empower individuals to take proactive steps toward early screening and detection. […] If the polyps go undetected or untreated, they can undergo further genetic changes, eventually transforming into cancerous cells. During this stage, cancer begins to invade deeper layers of the colon wall. At this point, colon cancer symptoms might start to become noticeable, but this can vary depending on the location of the tumor and its growth rate.

• #34 How Long Do Colon Cancer Symptoms Take to Appear?

  https://www.curasia.com/how-long-do-colon-cancer-symptoms-take-to-appear-insights-into-progression/

  As colon cancer progresses, symptoms tend to become more pronounced and harder to ignore. At this stage, the cancer may have spread beyond the colon, potentially affecting other parts of the body. Advanced colon cancer symptoms may include: Unexplained weight loss, Fatigue and weakness, Anemia due to chronic blood loss, Persistent nausea or vomiting, Narrowing of stool or the feeling of incomplete bowel movements. […] Even though colon cancer symptoms can take years to appear, early detection through regular screenings can dramatically improve treatment outcomes. When colon cancer is detected in its early stages, the five-year survival rate is around 90%. However, if the cancer is diagnosed at a later stage, when it has spread to other parts of the body, the survival rate drops significantly.

• #34 How Long Do Colon Cancer Symptoms Take to Appear?

  https://www.curasia.com/how-long-do-colon-cancer-symptoms-take-to-appear-insights-into-progression/

  While screenings are essential, being aware of the potential symptoms of colon cancer is equally important. Any persistent changes in bowel habits, unexplained blood in stools, or unexplained weight loss should not be ignored, even if you have recently undergone a screening. Early consultation with a healthcare provider can help identify any potential issues before they become more serious. […] Colon cancer is a slow-developing disease, with symptoms that may take years to appear. However, this delayed onset makes it all the more important to stay proactive about regular screenings and to monitor any changes in your digestive health.

• #35 Colon Cancer: 8 Early Warning Signs and 4 Stages

  https://www.medicinenet.com/early_warning_signs_and_stages_of_colon_cancer/article.htm

  Each stage of colon cancer refers to the extent of spread of the cancer at the time that it is identified. There are 4 main stages of colon cancer, referred to as stages 1-4: Stage 1 colon cancer has spread from the lining of the large intestine into the muscular wall of the large intestine. Stage 2 colon cancer has spread through the wall of the intestine to the outermost layer and may grow into adjacent organs. Stage 3 colon cancer has spread to lymph nodes in the area or to other organs in the area. Stage 4 colon cancer is metastatic colon cancer. It has spread away from the colon to other parts of the body such as the liver, bones, or lungs.

• #36 Colorectal cancer: Symptoms, stages, & outlook

  https://www.medicalnewstoday.com/articles/155598

  Around 37% of people with colorectal cancer in the United States receive a diagnosis in the early stages of the disease. […] However, symptoms of colorectal cancer can be similar to those of many other health conditions. Anyone with concerns about these symptoms should seek medical advice. […] Some people only notice symptoms in the later stages, when colorectal cancer spreads to the lungs, liver, or other areas. The symptoms can depend on the affected area. […] The speed of colorectal cancer progression may vary from person to person. In some cases, colorectal cancer may start to spread very early on. People can work with their healthcare team to monitor their cancer progression.

• #37 How does colorectal cancer present? Symptoms, duration, and clues to location – PubMed

  https://pubmed.ncbi.nlm.nih.gov/10520866/

  Most colorectal cancers still present with symptoms because screening, although effective, is not yet widely practiced. A careful history and physical examination are still the usual methods for suspecting colorectal cancer and ordering appropriate investigation. Therefore, we studied the symptoms, duration, and clues to location of colorectal cancer. […] The most common symptoms were rectal bleeding (58%), abdominal pain (52%), and change in bowel habits (51%); the majority had anemia (57%) and occult bleeding (77%). The median duration of symptoms (from onset to diagnosis) was 14 wk (interquartile range 5-43). We found no association between overall duration of symptoms and the stage of the tumor. […] Until prevention of colorectal cancer is more common, we must continue to rely on clinical findings for detecting this cancer. Our results will remind physicians to keep colorectal cancer on the differential diagnosis of „chronic” gastrointestinal symptoms, and our decision rule may prompt earlier investigation with colonoscopy.

• #38 Possible Signs of Colorectal Cancer in Younger Adults – NCI

  https://www.cancer.gov/news-events/cancer-currents-blog/2023/colorectal-cancer-young-people-warning-signs

  The investigators also looked at the length of delay between when warning signs appeared and when a person was diagnosed. […] Overall, though, nearly 50% of the patients with early-onset colorectal cancer experienced their first sign within 3 months of their diagnosis, with a median delay of less than a month. […] They may also potentially help doctors and their patients under 50 with any of these signs make decisions about whether to seek diagnostic testing, she continued, particularly if they have more than one sign, if the signs dont go away, or if they come back.

• #38 Possible Signs of Colorectal Cancer in Younger Adults – NCI

  https://www.cancer.gov/news-events/cancer-currents-blog/2023/colorectal-cancer-young-people-warning-signs

  For younger adults, we really want to raise awareness that, if you have any of these signs or symptoms, dont wait to see a doctor. […] Younger adults are also more likely to ignore early signs of the disease, increasing the likelihood that their cancers arent caught until common colorectal cancer symptoms seen in older adults, such as weight loss and rectal bleeding, become severe. […] Dr. Cao noted that many early-onset colorectal cancers arent diagnosed until the cancer is at an advanced stage. […] If caught at localized stage, 5-year survival is 90%. […] The four signs turned out to be more common among those who were diagnosed with early-onset colorectal cancer than those who werent over a similar time period. […] The more signs a person had, the more likely they were to have been diagnosed with the disease.

• #39 Signs and Symptoms – Colon Cancer Coalition

  https://coloncancercoalition.org/get-educated/what-you-need-to-know/colon-cancer-symptoms/

  Common stomach ailments or a change in bowel habits happen to everyone from time to time. […] Contact your provider when symptoms persist or if you experience more than one at a time. […] Blood in the toilet, on the stool, or on toilet paper after a bowel movement. […] Any blood that appears after a bowel movement should be evaluated by a clinician, and large amounts of blood may warrant an emergency room visit. […] A Thin, narrow, or ribbon-like stool could indicate changes inside your colon. […] Blood, darkened, or tarry (black) stool can signal issues inside the colon. […] If your constipation lasts longer than two weeks, you should see a doctor to identify its cause. […] Chronic internal bleeding (like from a bleeding polyp, etc.) can lead to iron deficiency (anemia), causing persistent tiredness.

• #39 Signs and Symptoms – Colon Cancer Coalition

  https://coloncancercoalition.org/get-educated/what-you-need-to-know/colon-cancer-symptoms/

  Anemia can be a sign of internal bleeding. […] Sudden weight loss or a significant drop in energy levels for no apparent reason. […] Stomach discomfort or cramping that doesn’t go away could indicate colon issues. […] Constant bloating or a persistent urge to have a bowel movement, even when there is no need to have one, could indicate changes in your colon preventing a complete bowel evacuation. […] Many people diagnosed with colorectal cancer report no symptoms. […] Regular screening is crucial, especially if you’re over 45 or have a family history of CRC. […] Bleeding and cramping were the most obvious symptoms. […] Its important to remember that these symptoms can have causes other than colon cancer. […] Early detection is key 90% of colorectal cancers are treatable when diagnosed early.

• #40 Colon Cancer Symptoms, Signs and Screenings | Brown University Health

  https://www.brownhealth.org/be-well/colon-cancer-symptoms-signs-and-screenings

  Most early colorectal cancers have no symptoms. As CRCs grow, they can bleed and cause a low red blood cell count, known as anemia. Other symptoms of CRC include a change in bowel habits (such as new constipation), rectal bleeding, dark stools (called melena, due to slow internal bleeding), abdominal pain or unintentional weight loss. […] Because there are typically no signs of CRC in its earliest stages, screening tests like colonoscopy are so important; they can identify cancers early, before symptoms appear and when they are most treatable.

• #41 Signs and Symptoms of Colon Cancer | American Cancer Society

  https://www.cancer.org/cancer/latest-news/signs-and-symptoms-of-colon-cancer.html

  Colorectal cancer might not cause symptoms right away. In fact, many of the symptoms of colorectal cancer can also be caused by other problems, such as infection, hemorrhoids, irritable bowel syndrome, or inflammatory bowel disease. […] The symptoms of colorectal cancer in women and men are: A change in bowel habits, such as diarrhea, constipation, or narrowing of the stool, that lasts for more than a few days. A feeling that you need to have a bowel movement that is not relieved by having one. Rectal bleeding with bright red blood. Blood in the stool, which might make it look dark brown or black. Cramping or abdominal (belly) pain. Weakness and fatigue. Losing weight without trying. […] Often colorectal cancer doesnt cause symptoms until it has grown or spread. Thats why its best to be tested for colorectal cancer before ever having any symptoms. Colorectal cancer thats found early through screening, before you have symptoms, might be easier to treat. Screening can even prevent some colorectal cancers by finding and removing pre-cancerous growths called polyps.

• #42 Bowel cancer | Bladder & Bowel Community

  https://www.bladderandbowel.org/bowel/bowel-problems/bowel-cancer/

  Early detection and treatment can cure bowel cancer and prevent a recurrence. Sadly, a complete cure is not always possible, and cancer can sometimes return later on. When cancer has advanced to the point where surgery cannot be performed completely on it, there is a very low chance of a cure. […] The main symptoms of bowel cancer are the same for both men and women. However there are some early symptoms of cancer in men that can include: Changes in bowel habits, Blood in the rectal region, Changes in the urine, Urine that contains blood, Lumps in the testicles, Fatigue that is excessive, Weight loss that is unexplained.

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