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• #1 Paraneoplastic syndromes of the nervous system – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/paraneoplastic-syndromes/symptoms-causes/syc-20355687

  Paraneoplastic syndromes of the nervous system are a group of rare conditions that develop in some people who have cancer. […] Paraneoplastic syndromes of the nervous system occur when cancer-fighting agents of the immune system also attack parts of the brain, spinal cord, peripheral nerves or muscle. […] Depending on where the nervous system is affected, paraneoplastic syndromes can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. They often begin even before a cancer is diagnosed. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that can’t be controlled.

• #1 Paraneoplastic Syndromes Affecting the Nervous System | Neupsy Key

  https://neupsykey.com/paraneoplastic-syndromes-affecting-the-nervous-system/

  The neurologic symptoms of paraneoplastic syndromes typically present before the tumor is diagnosed. The tumors are often small and difficult to detect, and may spontaneously regress. Patients often survive the tumor but with persistent neurologic effects. The hypothesis is that patients develop neurologic symptoms because the tumor expresses onconeural antigens that cause a cellular and/or humoral response; this then cross-reacts with specific antigens in varied regions of the nervous system. […] Symptoms often begin explosively, with dizziness, nausea, and vomiting. Patients may develop diplopia and, subsequently, both truncal and appendicular ataxia, dysarthria, and dysphagia. Cerebrospinal fluid may have mild pleocytosis and magnetic resonance imaging (MRI) may reveal edema of the cerebellum. Autopsy usually shows massive Purkinje cell destruction.

• #1 Paraneoplastic Syndromes in Small-Cell Lung Cancer

  https://www.webmd.com/lung-cancer/paraneoplastic-syndromes-small-cell-lung-cancer

  Paraneoplastic syndromes are a group of symptoms that happen in some people who have small-cell lung cancer (SCLC). Some paraneoplastic syndromes affect your nervous system, including your brain, spinal cord, and nerves. Others affect your endocrine system (your hormone system). […] Paraneoplastic neurologic syndrome can attack almost any part of your nervous system. It usually affects one area at a time but may strike different areas as the disease goes on. Symptoms can come on fast or more slowly and start before or during cancer. They include: […] Limbic encephalitis. This is inflammation of the limbic system. Thats the part of the brain that manages memory, emotion, and behavior. The limbic system helps control your blood pressure, heart rate, hormones, sleep-wake cycle, and how much you eat and drink. With limbic encephalitis, you may have mood changes, trouble with sleep and short-term memory, and seizures.

• #1 Imaging Review of Paraneoplastic Neurologic Syndromes | American Journal of Neuroradiology

  http://www.ajnr.org/content/early/2020/10/22/ajnr.A6815

  Brain stem encephalitis has a variable clinical presentation that may include ataxia, dysarthria, and ophthalmoplegia. […] Paraneoplastic myelitis is a rare but likely underreported entity. It may occur in isolation or in conjunction with other involved regions. […] Paraneoplastic polyneuropathy is rare but usually manifests clinically as a sensory neuropathy. This is characterized by pain, paresthesias, and loss of vibratory sensation, often with ANNA-1/anti-Hu or anti-CRMP5 antibody positivity.

• #1 Paraneoplastic Syndromes in Small-Cell Lung Cancer

  https://www.webmd.com/lung-cancer/paraneoplastic-syndromes-small-cell-lung-cancer

  Cerebellar degeneration. This can cause severe problems with balance and the muscles that help you see, speak, and swallow. In time, you may not be able to read, write, or take care of yourself. Cellular degeneration is one of the most disabling paraneoplastic neurologic conditions. Its also one of the hardest to treat. […] Encephalomyelitis. This can affect many parts of the brain and spinal cord and trigger a wide range of symptoms. In the early stages, encephalomyelitis can look a lot like Parkinsons disease. […] Opsoclonus-myoclonus. This is a problem with the part of the brain that affects your muscles and balance. It causes rapid eye movements and muscle twitches you cant control. […] Stiff-person syndrome. Once called stiff-man syndrome, this group of symptoms causes severe stiffness in the lower back and legs as well as painful muscle spasms.

• #1 Paraneoplastic Syndrome: Causes, Symptoms, Treatment, and Outlook

  https://resources.healthgrades.com/right-care/brain-and-nerves/paraneoplastic-syndrome

  Sensory neuropathy symptoms start on one side of the body. Over a few days or weeks, it progresses to the other side. Symptoms can include: pain like an electric shock, a sensation of walking on sand, cold, numb, or burning hands and feet, changes in taste, changes in hearing. […] Neuropathy occurs when some of your nerves are damaged. Most neuropathies affect the extremities on both sides of the body. […] This rare syndrome occurs when the small blood vessels that feed the peripheral muscles and nerves become inflamed. The inflammation can lead to peripheral neuropathy that may start on one side of the body and then progress to both sides. […] Lambert Eaton myasthenic syndrome (LEMS) occurs when the muscles are weak and do not contract well due to a deficit in releasing the neurotransmitter acetylcholine. This weakness is typically present in the hips and shoulders.

• #1 Paraneoplastic Syndrome: Causes, Symptoms, Treatment, and Outlook

  https://resources.healthgrades.com/right-care/brain-and-nerves/paraneoplastic-syndrome

  Myasthenia gravis (MG) occurs when there is weakness in the muscles controlling the eyes, face, neck, and limbs. It may cause problems with eye movements, double vision, eyelids that droop, and weakness in the neck and jaw. […] Polymyositis is inflammation of multiple muscles, and dermatomyositis is inflammation involving muscles and the skin. Both syndromes cause similar symptoms, including: sore and weak shoulders and thighs, difficulty holding the head up, difficulty swallowing, purplish eyelids with swelling, crusty red rash on the knuckles, itching, skin ulcers. […] The exact cause of PNS is unknown. While the study of antibodies suggests that an atypical immune system response is involved, researchers do not know what causes the immune system to interfere with the nervous system.

• #1 Paraneoplastic Syndrome: Causes, Symptoms, Treatment, and Outlook

  https://resources.healthgrades.com/right-care/brain-and-nerves/paraneoplastic-syndrome

  Paraneoplastic encephalomyelitis affects several brain areas, including the cerebellum, brainstem, and spinal cord. As a result, people with this condition develop symptoms from both limbic encephalitis and cerebellar degeneration, along with other neurological symptoms, such as: double or blurry vision, vertigo, slurred or very quiet speech, changes in heart rhythm, tremors, slow, uncoordinated movements, possible loss of consciousness and coma. […] The symptoms include: anxiety, mood and behavioral changes, insomnia, hallucinations and delusions, episodes of impaired speech, confusion, atypical facial movements, unusual posture and movements of the arms and legs, high fever. […] Paraneoplastic stiff-person syndrome usually affects the muscles of the lower back and legs but sometimes involves the arms. It causes muscle stiffness, rigidity, and painful spasms, which can progress to other body parts.

• #1 Paraneoplastic Syndromes in Small-Cell Lung Cancer

  https://www.webmd.com/lung-cancer/paraneoplastic-syndromes-small-cell-lung-cancer

  Lambert-Eaton myasthenic syndrome (LEMS). About 2 – 3 % of people with SCLC have LEMS, though it’s likely more people have it but havent been diagnosed. LEMS disrupts signals between your nerves and muscles and can lead to weak legs, fatigue, and trouble swallowing. Men with LEMS may struggle with sexual function. […] Peripheral neuropathy. This is damage to the nerves that send signals from your brain and spinal cord to the rest of your body. You have two types of peripheral nerves motor and sensory. Motor nerves help you move. Sensory nerves help you feel things like heat, cold, and pain. Peripheral neuropathy isnt always the result of a paraneoplastic neurologic syndrome. Cancer and side effects of treatment can cause it, too. […] Neuromyotonia (Isaacs syndrome). This is marked by problems with the nerves that control muscle movement outside your brain and spinal cord. You may have twitching, muscle cramps, and stiffness. […] Dysautonomia. This is damage to nerves that control your heart rate, blood pressure, and bowels and bladder (your autonomic nervous system). Dysautonomia can trigger low blood pressure and an irregular heartbeat.

• #1 Paraneoplastic Neurological Disorders | PM&R KnowledgeNow

  https://now.aapmr.org/neuromuscular-manifestations-of-neoplasms-and-paraneoplastic-syndromes/

  Paraneoplastic neurological syndromes (PNS) are a group of neurological disorders resulting from an immune response triggered by an underlying tumor that affects the central and/or peripheral nervous systems, directed originally against the tumor itself. […] Each syndrome has a unique clinical presentation that often precedes a diagnosis of cancer. They may be rapidly progressive, in many cases leaving the patients severely debilitated within weeks to months. […] Most PNS associated with onconeural antibodies usually have a subacute, aggressive clinical course and then stabilize. […] PNS presentation often precedes cancer diagnosis, with the large majority of tumors being diagnosed within two years of onset of the neurologic disorder. […] Symptoms of PNS may include ataxia, encephalitis, peripheral neuropathy, memory problems, seizures, sensory motor neuropathies, anorexia, rapid weight loss and fatigue. […] The failure of the neurologic syndrome to respond to treatment may be due to irreversible neuronal damage that occurred before treatment.

• #1 Paraneoplastic syndromes of the nervous system | Beacon Health System

  https://www.beaconhealthsystem.org/library/diseases-and-conditions/paraneoplastic-syndromes-of-the-nervous-system?content_id=CON-20251949

  Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments. […] But if you have any symptoms suggesting a paraneoplastic syndrome, see your healthcare professional as soon as possible. Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system. […] Sometimes the injury to the nervous system can be reversed with therapy directed toward the cancer and the immune system. But sometimes paraneoplastic syndromes can result in permanent damage to the nervous system. […] Treating the cancer and other therapies may prevent further damage and improve symptoms and quality of life.

• #1 Paraneoplastic Neurologic Syndromes . | Oncohema Key

  https://oncohemakey.com/paraneoplastic-neurologic-syndromes-3/

  Since paraneoplastic syndromes often herald the diagnosis of cancer, patients may be diagnosed and treated early in the course of the disease. Earlier cancer diagnosis may correlate with a higher likelihood of cure and remission of neurologic symptoms. It remains controversial, however, whether a better prognosis in patients with paraneoplastic syndromes is related to the immune control of the underlying cancer. […] Neurological symptoms commonly develop in the early stages of cancer and in two-thirds of patients before a cancer diagnosis has been established. Therefore, early recognition and treatment of a paraneoplastic neurologic disorder along with treatment of the underlying cancer are critical to reduce neurologic morbidity and to improve overall patient survival. Paraneoplastic neurologic syndromes usually have an acute or subacute onset, but the diagnosis may remain challenging if no typical antibodies are found in serum or CSF.

• #1 What Is Paraneoplastic Syndrome? Understanding This Rare Condition

  https://drchandrilchugh.com/paraneoplastic-syndromes/what-is-paraneoplastic-syndrome-understanding-this-rare-condition/

  The prognosis varies with the cancer’s stage at diagnosis. Early detection and cancer treatment with an autoimmune response focus could prevent further nerve damage. This might also improve symptoms and life quality. […] Unfortunately, there is no cure for paraneoplastic syndromes. Yet, your outlook can change based on the cancer’s stage when it was found. If the cancer and autoimmune issues are treated early and right, further harms might be avoided. You could also see your symptoms get better, improving your life quality.

• #1 Paraneoplastic Syndromes: Causes, Symptoms and Treatment

  https://www.rupahealth.com/post/paraneoplastic-syndromes-causes-symptoms-and-treatment

  Paraneoplastic syndromes can present with a wide range of symptoms, often mimicking other diseases, which makes diagnosis difficult. […] Symptoms may be subtle initially but can rapidly progress, affecting multiple organ systems. Additionally, symptoms may appear even before the diagnosis of cancer. […] Paraneoplastic syndromes may involve several organ systems: […] Neurological: Muscle weakness, difficulty walking, dizziness, slurred speech, seizures, or memory problems. […] Hormonal: Unexplained weight gain or loss, high blood pressure, irregular blood sugar levels, excessive thirst, and mood swings. […] Atypical Symptoms: Some patients experience unusual symptoms such as chronic fatigue, gastrointestinal disturbances (nausea, vomiting, diarrhea), or persistent fevers. […] The outlook for patients with paraneoplastic syndromes depends on several factors, including the type of cancer, severity of immune response, and timeliness of treatment. […] Some patients experience partial or full recovery, particularly if the cancer is successfully treated early. However, others may have chronic neurological, muscular, or metabolic issues that require lifelong management.

• #1 Paraneoplastic Syndromes – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK507890/

  When the peripheral nervous system is involved, patients may present with: Autonomic neuropathy: Frequently associated with SCLC and thymoma. […] Paraneoplastic syndromes have diverse clinical manifestations, and hence prognosis may vary. […] Death may result from the underlying progression of cancer, from complications of cancer treatments, or an irreversible system impairment, usually acute respiratory failure, congestive heart failure, or kidney failure. […] Paraneoplastic disorders may affect diverse organ systems, and complications mainly involve endocrine, neurologic, dermatologic, rheumatologic, and hematologic systems.

• #1 Paraneoplastic syndromes of the nervous system – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/paraneoplastic-syndromes/symptoms-causes/syc-20355687

  Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments. […] But if you have any symptoms suggesting a paraneoplastic syndrome, see your healthcare professional as soon as possible. Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system. […] Paraneoplastic syndromes of the nervous system are not caused by cancer cells directly or by the cancer spreading, known as metastasis. […] Instead, the syndromes occur alongside the cancer as a result of the activation of your immune system. […] Researchers believe that paraneoplastic syndromes of the nervous system are caused by cancer-fighting abilities of the immune system.

• #1 Paraneoplastic syndromes of the nervous system | Health Library | Memorial Health System

  https://www.mhsystem.org/health-library/con-20251949/

  Paraneoplastic syndromes of the nervous system are a group of rare conditions that develop in some people who have cancer. […] Paraneoplastic syndromes of the nervous system occur when cancer-fighting agents of the immune system also attack parts of the brain, spinal cord, peripheral nerves or muscle. […] Depending on where the nervous system is affected, paraneoplastic syndromes can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that cant be controlled.

• #1 Paraneoplastic syndrome – Wikipedia

  https://en.wikipedia.org/wiki/Paraneoplastic_syndrome

  The most common cancers associated with PNDs are breast, ovarian, and lung cancers, but many other cancers can produce paraneoplastic symptoms, as well. […] Treatment options include therapies to eliminate the underlying cancer, such as chemotherapy, radiation and surgery. Therapies to reduce or slow neurological degeneration. In this scenario, rapid diagnosis and treatment are critical for the patient to have the best chance of recovery. Since these disorders are relatively rare, few doctors have seen or treated paraneoplastic neurological disorders (PNDs). Therefore, PND patients should consult with a specialist with experience in diagnosing and treating paraneoplastic neurological disorders. […] A specific prognosis for those with paraneoplastic syndromes links to each unique case presented. Thus, prognosis for paraneoplastic syndromes may vary greatly. For example, paraneoplastic pemphigus often included infection as a major cause of death. Paraneoplastic pemphigus is one of the three major subtypes that affects IgG autoantibodies that are characteristically raised against desmoglein 1 and desmoglein 3 (which are cell-cell adhesion molecules found in desmosomes). Underlying cancer or irreversible system impairment, seen in acute heart failure or kidney failure, may result in death as well.

• #1 Paraneoplastic syndromes | MedLink Neurology

  https://www.medlink.com/articles/paraneoplastic-syndromes

  Paraneoplastic neurologic syndromes can affect any part of the central or peripheral nervous system. These disorders are uncommon compared to other neurologic complications of systemic cancer, but affected patients often have severe and irreversible neurologic morbidity. Many patients have one or more of an ever-growing list of antineuronal or onconeural autoantibodies. Because most paraneoplastic syndromes are the presenting feature of the associated neoplasm, neurologists must be able to recognize and diagnose these syndromes promptly. […] Prompt diagnosis and treatment of paraneoplastic disorders increases the likelihood of a more favorable neurologic outcome. […] The neurologic outcome of patients with paraneoplastic syndromes varies considerably among different disorders. Some patients have major neurologic improvement solely with treatment of the associated neoplasm; this possibility places an obvious premium on prompt recognition of the paraneoplastic syndrome. Unfortunately, many patients are left with severe and permanent neurologic disability despite remission of the associated tumor. […] Prognosis after treatment is typically most favorable in paraneoplastic CNS syndromes with antibodies directed against cell surface antigens.

• #2 Paraneoplastic syndromes of the nervous system | UM Health-Sparrow

  https://www.uofmhealthsparrow.org/departments-conditions/conditions/paraneoplastic-syndromes-nervous-system

  Paraneoplastic syndromes of the nervous system can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. They often begin even before a cancer is diagnosed. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that can’t be controlled. […] When it occurs as a paraneoplastic syndrome, Lambert-Eaton myasthenic syndrome is typically associated with lung cancer.

• #2 Paraneoplastic neurological syndromes | Orphanet Journal of Rare Diseases | Full Text

  https://ojrd.biomedcentral.com/articles/10.1186/1750-1172-2-22

  PNS are rare diseases occurring in less than about 0.01% of patients with cancer. Only the Lambert-Eaton myasthenic syndrome is relatively frequent, occurring in about 1% of patients with small-cell lung cancer. […] In almost 80% of patients, the PNS antedates the diagnosis of cancer by several months to several years. Most tumors are diagnosed within 46 months. It is accepted that the risk of cancer development decreases significantly two years after diagnosing PNS and becomes very low after four years. All these data explain why it is often difficult to recognize a given neurological disorder as paraneoplastic.

• #2 Paraneoplastic Syndromes in Small-Cell Lung Cancer

  https://www.webmd.com/lung-cancer/paraneoplastic-syndromes-small-cell-lung-cancer

  Cerebellar degeneration. This can cause severe problems with balance and the muscles that help you see, speak, and swallow. In time, you may not be able to read, write, or take care of yourself. Cellular degeneration is one of the most disabling paraneoplastic neurologic conditions. Its also one of the hardest to treat. […] Encephalomyelitis. This can affect many parts of the brain and spinal cord and trigger a wide range of symptoms. In the early stages, encephalomyelitis can look a lot like Parkinsons disease. […] Opsoclonus-myoclonus. This is a problem with the part of the brain that affects your muscles and balance. It causes rapid eye movements and muscle twitches you cant control. […] Stiff-person syndrome. Once called stiff-man syndrome, this group of symptoms causes severe stiffness in the lower back and legs as well as painful muscle spasms.

• #2 Imaging Review of Paraneoplastic Neurologic Syndromes | American Journal of Neuroradiology

  http://www.ajnr.org/content/early/2020/10/22/ajnr.A6815

  Symptoms include mood and behavioral changes, cognitive dysfunction, memory loss, and seizure activity. Limbic encephalitis may be associated with various onconeuronal paraneoplastic antibodies, including antineuronal nuclear autoantibody type 1(ANNA-1)/anti-Hu, anti-collapsin response mediator protein-5 (CRMP5)/anti-CV2, and anti-Ma2. […] Typical imaging findings of limbic encephalitis include T2 hyperintensity and swelling of the mesial temporal lobes with FDG avidity on PET, sometimes with associated enhancement. […] PCD is clinically characterized by limb and truncal ataxia, nystagmus, and dysarthria. These symptoms are often progressive over weeks to months. […] Imaging findings of PCD depend on the phase of the syndrome. In the acute phase, increased T2 signal within the cerebellar hemispheres can be seen.

• #2 Paraneoplastic Syndromes – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK507890/

  Paraneoplastic syndromes are rare disorders with complex systemic clinical manifestations due to underlying malignancy. […] Symptoms can manifest before or after the diagnosis of cancer. […] Therefore, clinicians must recognize these syndromes to promptly diagnose the occult malignancy and improve patient clinical outcomes. […] Paraneoplastic syndromes may affect the central nervous system, neuromuscular junction, or peripheral nervous system and present accordingly. […] When the central nervous system is involved, patients may present with: Paraneoplastic Encephalitis/encephalomyelitis: This syndrome may include cerebellar encephalitis, brainstem encephalitis, limbic encephalitis, and myelitis. […] When the neuromuscular junction is involved, patients may present with: Myasthenia gravis: Most commonly seen in patients with thymoma and is clinically manifested as a weakness of voluntary muscles and diaphragmatic weakness.

• #2 Paraneoplastic Syndrome: Causes, Symptoms, Treatment, and Outlook

  https://resources.healthgrades.com/right-care/brain-and-nerves/paraneoplastic-syndrome

  Paraneoplastic syndromes are a group of disorders that affect the nervous systems of people with cancerous tumors called “neoplasms.” Symptoms result from the immune system’s reaction to cancer and vary depending on which part of the nervous system is affected. […] Some symptoms of PNS develop over a few days or weeks, while others develop more slowly. In 60% of cases, the symptoms appear before doctors have diagnosed any cancer. […] Symptoms of paraneoplastic limbic encephalitis can include: difficulty sleeping, mood swings, severe short-term memory problems, seizures. […] As a result, eye movements become difficult to control, and double vision or “jumpiness” of the visual field develops. Fine motor coordination problems develop in the arms, legs, and muscles that control speech and swallowing.

• #2 Paraneoplastic syndromes affecting spinal cord, peripheral nerve, and muscle – UpToDate

  https://www.uptodate.com/contents/paraneoplastic-syndromes-affecting-spinal-cord-peripheral-nerve-and-muscle

  In a case series of 31 patients with an isolated progressive paraneoplastic myelopathy, the most common coexisting cancers were lung and breast; kidney cancer, thyroid cancer, gynecologic cancers, and melanomas were also present in a few patients. Antibodies to amphiphysin and CRMP5 were the most commonly identified paraneoplastic biomarkers, observed in eight and nine patients, respectively. Patients presented with subacute or insidiously progressive myelopathy symptoms, usually symmetric, leading to wheelchair dependence in half of patients. Spine MRI abnormalities, identified in 20 patients, included longitudinally extensive T2-hyperintense signal abnormality (extending over more than three vertebral segments), often associated with contrast enhancement. Cerebrospinal fluid (CSF) analysis often showed elevated protein levels and/or pleocytosis. Most patients did not improve, even after oncologic and/or immunosuppressive therapy. The study suggests that in patients with new-onset progressive myelopathy of unknown cause, the presence of symmetric, longitudinally extensive tract or gray matter-specific changes on spinal MRI should raise suspicion for a paraneoplastic etiology.

• #2 Paraneoplastic Syndromes in Small-Cell Lung Cancer

  https://www.webmd.com/lung-cancer/paraneoplastic-syndromes-small-cell-lung-cancer

  Lambert-Eaton myasthenic syndrome (LEMS). About 2 – 3 % of people with SCLC have LEMS, though it’s likely more people have it but havent been diagnosed. LEMS disrupts signals between your nerves and muscles and can lead to weak legs, fatigue, and trouble swallowing. Men with LEMS may struggle with sexual function. […] Peripheral neuropathy. This is damage to the nerves that send signals from your brain and spinal cord to the rest of your body. You have two types of peripheral nerves motor and sensory. Motor nerves help you move. Sensory nerves help you feel things like heat, cold, and pain. Peripheral neuropathy isnt always the result of a paraneoplastic neurologic syndrome. Cancer and side effects of treatment can cause it, too. […] Neuromyotonia (Isaacs syndrome). This is marked by problems with the nerves that control muscle movement outside your brain and spinal cord. You may have twitching, muscle cramps, and stiffness. […] Dysautonomia. This is damage to nerves that control your heart rate, blood pressure, and bowels and bladder (your autonomic nervous system). Dysautonomia can trigger low blood pressure and an irregular heartbeat.

• #2 Paraneoplastic syndromes of the nervous system | UM Health-Sparrow

  https://www.uofmhealthsparrow.org/departments-conditions/conditions/paraneoplastic-syndromes-nervous-system

  When myasthenia gravis occurs as a paraneoplastic syndrome, it is typically associated with cancer of the thymus gland, known as thymoma. […] Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments. […] Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system.

• #2 Paraneoplastic Syndromes – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK507890/

  When the peripheral nervous system is involved, patients may present with: Autonomic neuropathy: Frequently associated with SCLC and thymoma. […] Paraneoplastic syndromes have diverse clinical manifestations, and hence prognosis may vary. […] Death may result from the underlying progression of cancer, from complications of cancer treatments, or an irreversible system impairment, usually acute respiratory failure, congestive heart failure, or kidney failure. […] Paraneoplastic disorders may affect diverse organ systems, and complications mainly involve endocrine, neurologic, dermatologic, rheumatologic, and hematologic systems.

• #2 Paraneoplastic syndromes of the nervous system – Augusta HealthSearchClose SearchSearch IconSearch IconClose Search IconMobile Menu IconMobile Menu Close IconInstagramFacebookTwitterYoutube

  https://www.augustahealth.com/disease/paraneoplastic-syndromes-of-the-nervous-system/

  Signs and symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. Signs and symptoms of paraneoplastic syndromes of the nervous system often begin even before a cancer is diagnosed. Signs and symptoms vary depending on the body part being injured, and may include: Difficulty walking, Difficulty maintaining balance, Loss of muscle coordination, Loss of muscle tone or weakness, Loss of fine motor skills, such as picking up objects, Difficulty swallowing, Slurred speech or stuttering, Memory loss and other thinking (cognitive) impairment, Vision problems, Sleep disturbances, Seizures, Hallucinations, Unusual involuntary movements.

• #2

• #2 Paraneoplastic Neurological Disorders | PM&R KnowledgeNow

  https://now.aapmr.org/neuromuscular-manifestations-of-neoplasms-and-paraneoplastic-syndromes/

  Paraneoplastic neurological syndromes (PNS) are a group of neurological disorders resulting from an immune response triggered by an underlying tumor that affects the central and/or peripheral nervous systems, directed originally against the tumor itself. […] Each syndrome has a unique clinical presentation that often precedes a diagnosis of cancer. They may be rapidly progressive, in many cases leaving the patients severely debilitated within weeks to months. […] Most PNS associated with onconeural antibodies usually have a subacute, aggressive clinical course and then stabilize. […] PNS presentation often precedes cancer diagnosis, with the large majority of tumors being diagnosed within two years of onset of the neurologic disorder. […] Symptoms of PNS may include ataxia, encephalitis, peripheral neuropathy, memory problems, seizures, sensory motor neuropathies, anorexia, rapid weight loss and fatigue. […] The failure of the neurologic syndrome to respond to treatment may be due to irreversible neuronal damage that occurred before treatment.

• #2 Paraneoplastic syndromes | MedLink Neurology

  https://www.medlink.com/articles/paraneoplastic-syndromes

  Paraneoplastic neurologic syndromes can affect any part of the central or peripheral nervous system. These disorders are uncommon compared to other neurologic complications of systemic cancer, but affected patients often have severe and irreversible neurologic morbidity. Many patients have one or more of an ever-growing list of antineuronal or onconeural autoantibodies. Because most paraneoplastic syndromes are the presenting feature of the associated neoplasm, neurologists must be able to recognize and diagnose these syndromes promptly. […] Prompt diagnosis and treatment of paraneoplastic disorders increases the likelihood of a more favorable neurologic outcome. […] The neurologic outcome of patients with paraneoplastic syndromes varies considerably among different disorders. Some patients have major neurologic improvement solely with treatment of the associated neoplasm; this possibility places an obvious premium on prompt recognition of the paraneoplastic syndrome. Unfortunately, many patients are left with severe and permanent neurologic disability despite remission of the associated tumor. […] Prognosis after treatment is typically most favorable in paraneoplastic CNS syndromes with antibodies directed against cell surface antigens.

• #2 Paraneoplastic syndromes of the nervous system

  https://johnsonmemorial.org/jmh-health-information-library-disease/con-20251949

  Paraneoplastic syndromes of the nervous system can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking, Trouble with balance, Loss of muscle coordination, Loss of muscle tone or weakness, Loss of fine motor skills, such as picking up objects, Trouble swallowing, Slurred speech or stuttering, Memory loss and other thinking impairment, Vision changes, Trouble sleeping, Seizures, Hallucinations, Movements that can’t be controlled. […] Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments.

• #2 Health Information Library | Rumah Sakit Pusat Pertamina

  https://rspp.co.id/dcontent.html?id=CON-20251949&n=Paraneoplastic%20syndromes%20of%20the%20nervous%20system

  Paraneoplastic syndromes of the nervous system are a group of rare conditions that develop in some people who have cancer. […] Paraneoplastic syndromes of the nervous system occur when cancer-fighting agents of the immune system also attack parts of the brain, spinal cord, peripheral nerves or muscle. […] Depending on where the nervous system is affected, paraneoplastic syndromes can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that can’t be controlled. […] But if you have any symptoms suggesting a paraneoplastic syndrome, see your healthcare professional as soon as possible. Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system.

• #3 Paraneoplastic syndromes of the nervous system | Beacon Health System

  https://www.beaconhealthsystem.org/library/diseases-and-conditions/paraneoplastic-syndromes-of-the-nervous-system?content_id=CON-20251949

  This group of conditions affects people who have cancer and occurs when parts of the immune system attack parts of the nervous system. […] Paraneoplastic syndromes of the nervous system occur when cancer-fighting agents of the immune system also attack parts of the brain, spinal cord, peripheral nerves or muscle. […] Depending on where the nervous system is affected, paraneoplastic syndromes can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. They often begin even before a cancer is diagnosed. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that can’t be controlled.

• #3 What are Paraneoplastic Neurological Syndromes?

  https://www.rhu-betpsy.fr/you-are-a-patient/dddd.html

  Paraneoplastic neurologic syndromes (PNS) are a group of conditions that affect the nervous system (brain, spinal cord, nerves and/or muscles) in patients with cancer. Symptoms of PNS can develop rapidly, over the course of a few days or weeks, or they may develop slowly. In about 60% of patients with PNS, the symptoms occur before the diagnosis of cancer is made. For about 40% of patients already known to have cancer, the initial symptoms of PNS may appear to resemble other complications of cancer. […] Signs and symptoms vary depending on the body part being injured, and may include: Difficulty walking, Difficulty maintaining balance, Loss of muscle coordination, Loss of muscle tone or weakness, Loss of fine motor skills, i.e picking up objects, Difficulty swallowing, Slurred speech or stuttering, Memory loss and other thinking impairment, Vision problems, Sleep disturbances, Seizures, Hallucinations, Unusual involuntary movement. The signs and symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and even some cancer treatments. But if you have any signs or symptoms suggesting a paraneoplastic syndrome, see your doctor as soon as possible. Early diagnosis and appropriate care can be extremely important.

• #3 Paraneoplastic cerebellar degeneration (PCD) – Autoimmune Association

  https://autoimmune.org/disease-information/paraneoplastic-cerebellar-degeneration-pcd/

  Paraneoplastic cerebellar degeneration (PCD) is a rare neurological disorder characterized by a widespread loss of Purkinje cells associated with a progressive pancerebellar dysfunction. […] Patients with paraneoplastic neurological syndrome (PNS) most often present with neurologic symptoms before an underlying tumor is detected. […] Symptoms of PCD may include dizziness, loss of coordination, blurred vision, nystagmus, ataxia, and speech difficulties.

• #3 Psychiatric manifestations of paraneoplastic syndromes | European Psychiatry | Cambridge Core

  https://www.cambridge.org/core/journals/european-psychiatry/article/psychiatric-manifestations-of-paraneoplastic-syndromes/A6985F82053552691F44DB6E7DBEC015

  Paraneoplastic syndromes (PS) result from indirect effects of neoplasms. In 50% of the cases the symptoms precede the diagnosis and run independently. PS may involve the peripheral or central nervous system, resulting in symptoms from sensory neuropathies to several neuropsychiatric manifestations. […] Paraneoplastic neurological disorders include limbic encephalitis that can present subacutely with symptoms of depression, irritability, hallucinations, cognitive impairment associated with sleep alterations, confusion and seizures. […] PS can be related to various neuropsychiatric manifestations affecting consciousness, cognition, mood and perception.

• #3 Paraneoplastic Syndromes and Lymphoma | MyLymphomaTeam

  https://www.mylymphomateam.com/resources/paraneoplastic-syndromes-and-lymphoma

  In one small study of people with either Hodgkin lymphoma or non-Hodgkin lymphoma, the most commonly associated paraneoplastic neurological syndrome was cerebellar degeneration, present in 21 out of 53 cases. […] Paraneoplastic syndromes of the peripheral nervous system (such as demyelinating polyradiculopathy) were more common in people with non-Hodgkin lymphoma. […] For instance, one case study of a person with non-Hodgkin lymphoma observed a paraneoplastic disease known as opsoclonus-myoclonus syndrome. This syndrome affects the nervous system and involves rapid, multidirectional eye movements (opsoclonus), quick, involuntary muscle jerks (myoclonus), uncoordinated movement (ataxia), irritability, and sleep disturbance. […] Prompt and effective diagnosis and treatment of paraneoplastic syndromes is important because these syndromes can affect outcomes related to lymphoma. […] Because the presence of paraneoplastic syndromes can make the prognosis of underlying cancer worse, it is important to recognize paraneoplastic syndromes when they occur.

• #3 Paraneoplastic syndromes of the nervous system | UM Health-Sparrow

  https://www.uofmhealthsparrow.org/departments-conditions/conditions/paraneoplastic-syndromes-nervous-system

  Paraneoplastic syndromes of the nervous system can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. They often begin even before a cancer is diagnosed. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking. Trouble with balance. Loss of muscle coordination. Loss of muscle tone or weakness. Loss of fine motor skills, such as picking up objects. Trouble swallowing. Slurred speech or stuttering. Memory loss and other thinking impairment. Vision changes. Trouble sleeping. Seizures. Hallucinations. Movements that can’t be controlled. […] When it occurs as a paraneoplastic syndrome, Lambert-Eaton myasthenic syndrome is typically associated with lung cancer.

• #3 Paraneoplastic syndromes of the nervous system | Altru Health System

  https://www.altru.org/health-library/conditions/paraneoplastic-syndromes-of-the-nervous-system

  Symptoms vary depending on the body part being injured, and may include: Trouble walking. […] Trouble with balance. […] Loss of muscle coordination. […] Loss of muscle tone or weakness. […] Loss of fine motor skills, such as picking up objects. […] Trouble swallowing. […] Slurred speech or stuttering. […] Memory loss and other thinking impairment. […] Vision changes. […] Trouble sleeping. […] Seizures. […] Hallucinations. […] Movements that can’t be controlled. […] Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments. […] But if you have any symptoms suggesting a paraneoplastic syndrome, see your healthcare professional as soon as possible. Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system.

• #4 Paraneoplastic neurological syndromes | PPT

  https://www.slideshare.net/slideshow/paraneoplastic-neurological-syndromes/30608508

  Paraneoplastic syndromes are generally, but not always, irreversible. Neurologic disability caused by paraneoplastic syndromes is often profound in the absence of any other cancer symptoms. […] Symptoms usually develop rapidly in days or a few weeks and then stabilize, leaving the patient severely disabled. Exceptions do occur, and some patients develop insidious forms of PND that can be misdiagnosed as chronic degenerative disorders. […] Spontaneous neurological improvement, although reported in some syndromes, is rare and should lead to the consideration of a nonparaneoplastic etiology. […] Paraneoplastic syndromes may affect any portion of the nervous system: cerebral cortex, brainstem, spinal cord, peripheral nerves, neuromuscular junction, and muscle. […] Diagnosis suggestive clinical features include acute or subacute onset, which may progress over commonly days, sometimes weeks to months, and severe neurologic disability.

• #4 Paraneoplastic syndromes of the nervous system – Augusta HealthSearchClose SearchSearch IconSearch IconClose Search IconMobile Menu IconMobile Menu Close IconInstagramFacebookTwitterYoutube

  https://www.augustahealth.com/disease/paraneoplastic-syndromes-of-the-nervous-system/

  Signs and symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. Signs and symptoms of paraneoplastic syndromes of the nervous system often begin even before a cancer is diagnosed. Signs and symptoms vary depending on the body part being injured, and may include: Difficulty walking, Difficulty maintaining balance, Loss of muscle coordination, Loss of muscle tone or weakness, Loss of fine motor skills, such as picking up objects, Difficulty swallowing, Slurred speech or stuttering, Memory loss and other thinking (cognitive) impairment, Vision problems, Sleep disturbances, Seizures, Hallucinations, Unusual involuntary movements.

• #4 Imaging Review of Paraneoplastic Neurologic Syndromes | American Journal of Neuroradiology

  http://www.ajnr.org/content/early/2020/10/22/ajnr.A6815

  Symptoms include mood and behavioral changes, cognitive dysfunction, memory loss, and seizure activity. Limbic encephalitis may be associated with various onconeuronal paraneoplastic antibodies, including antineuronal nuclear autoantibody type 1(ANNA-1)/anti-Hu, anti-collapsin response mediator protein-5 (CRMP5)/anti-CV2, and anti-Ma2. […] Typical imaging findings of limbic encephalitis include T2 hyperintensity and swelling of the mesial temporal lobes with FDG avidity on PET, sometimes with associated enhancement. […] PCD is clinically characterized by limb and truncal ataxia, nystagmus, and dysarthria. These symptoms are often progressive over weeks to months. […] Imaging findings of PCD depend on the phase of the syndrome. In the acute phase, increased T2 signal within the cerebellar hemispheres can be seen.

• #5 Paraneoplastic syndromes of the nervous system | Altru Health System

  https://www.altru.org/health-library/conditions/paraneoplastic-syndromes-of-the-nervous-system

  Symptoms vary depending on the body part being injured, and may include: Trouble walking. […] Trouble with balance. […] Loss of muscle coordination. […] Loss of muscle tone or weakness. […] Loss of fine motor skills, such as picking up objects. […] Trouble swallowing. […] Slurred speech or stuttering. […] Memory loss and other thinking impairment. […] Vision changes. […] Trouble sleeping. […] Seizures. […] Hallucinations. […] Movements that can’t be controlled. […] Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments. […] But if you have any symptoms suggesting a paraneoplastic syndrome, see your healthcare professional as soon as possible. Early diagnosis and appropriate care are important for treating the cancer and preventing further damage of the nervous system.

• #6 Paraneoplastic syndromes of the nervous system

  https://johnsonmemorial.org/jmh-health-information-library-disease/con-20251949

  Paraneoplastic syndromes of the nervous system can affect muscle movement, coordination, sensory perception, memory, thinking skills or even sleep. […] Symptoms of paraneoplastic syndromes of the nervous system can develop relatively quickly, often over days to weeks. […] Symptoms vary depending on the body part being injured, and may include: Trouble walking, Trouble with balance, Loss of muscle coordination, Loss of muscle tone or weakness, Loss of fine motor skills, such as picking up objects, Trouble swallowing, Slurred speech or stuttering, Memory loss and other thinking impairment, Vision changes, Trouble sleeping, Seizures, Hallucinations, Movements that can’t be controlled. […] Symptoms of paraneoplastic syndromes of the nervous system are similar to those of many conditions, including cancer, cancer complications and some cancer treatments.

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