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Diseases Associated with Transverse Myelitis

Several diseases may lead to TM or may mimic the presentation of myelitis and should be investigated at the time of acute symptoms. The following is a list of some diseases that should be considered when a patient is evaluated for transverse myelitis:


Neuromyelitis optica (NMO) and NMO spectrum disorders

NMO MRI panel

NMO is a rare relapsing autoimmune disorder that preferentially causes inflammation in the optic nerve and spinal cord. It is characterized by longitudinally extensive myelitis (myelitis which is 3 vertebral segments in length or greater), which can leave patients quite debilitated at presentation, and unilateral or bilateral optic neuritis. Some patients may present initially with optic neuritis or myelitis or both. Blood testing includes an anti-aquaporin-4 antibody (NMO-IgG) test, which is highly specific (>99%) with fair sensitivity (about 58%). Treatment for this disease involves acute management with therapies including IV methylprednisolone and PLEX, and prevention of future attacks with immunosuppressants including mycophenolate mofetil or rituximab, and aggressive rehabilitation.

Learn more about NMO:
Johns Hopkins Neuromyelitis Optica (NMO) Clinic
Johns Hopkins Neuromyelitis Optica Research Lab
http://www.guthyjacksonfoundation.org/

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Multiple Sclerosis

Multiple Sclerosis MRI panel

TM is sometimes a feature of relapsing-remitting multiple sclerosis (MS). This type of TM may be associated with demyelination or focal inflammation in the white matter of other regions of the central nervous system. In the past, many patients with monophasic forms of TM were erroneously classified as MS and, likewise, some MS patients were misdiagnosed as TM. The right diagnosis is critical for future management as treatment strategies may be very different for patients with MS compared to those with TM. In patients diagnosed with TM, a brain MRI and CSF studies are quite important to clarify the presence of MS. Brain MRI may help to identify the existence of areas of demyelination in other regions of the central nervous system other than the spinal cord. CSF studies may be helpful to determine if antibodies are being synthesized within the central nervous system (e.g., oligoclonal bands), a finding that may support a diagnosis of MS.

Learn more about MS at the Johns Hopkins Multiple Sclerosis Center.

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Systemic Erythematous Lupus

Systemic lupus erythematosus (SLE), often called lupus, is an autoimmune disorder that may involve the nervous system. Some of the most common symptoms are a facial rash, inflammation of the linings of the heart and lungs and kidney disease. About 1-3% of those with lupus develop TM.

Intravenous steroids and other immunosuppressant treatments have been shown to improve the outcome in patients who develop lupus after they are diagnosed with TM. This relationship can be complex to find, however, because some classic features of lupus are absent in those with transverse myelitis. For example, the usual MRI and spinal tap studies can come back normal when in fact inflammatory white cells or antibodies may produce myelitis or blood clots within the artery supplying the spinal cord, causing symptoms of myelitis or myelopathy.

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Sjogren’s Syndrome

Sjogren’s syndrome (SS) is an autoimmune or rheumatological disorder that frequently presents in young women and is associated with autoimmune attacks that affects exocrine glands. Patients with SS develop dry mucous membranes (e.g., dry eyes and mouth) and occasionally may present with neurological symptoms such as TM and peripheral neuropathy. Patients with TM associated with SS may experience recurrences or present with similar profiles as patients with NMO. The diagnosis of SS is achieved by assessment of autoantibodies in blood as well as other approaches such as lip biopsy and Schirmer test (assessment of production of tears).

Learn more about Sjogren’s syndrome at the Johns Hopkins Jerome L. Greene Sjögren's Syndrome Center

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Sarcoidosis

Sarcoidosis MRI panel

Sarcoidosis is a systemic granulomatous disease that affects mostly the lungs and lymph nodes. However, 10-15% of patients may have neurological complications (neurosarcoidosis) that may be manifested as transverse myelitis, meningitis and other neurological problems. Myelopathies associated with neurosarcoidosis are frequently longitudinally extensive subacute or chronic and may produce significant neurological disability.

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Infectious Diseases

Myelitis can occur as a result of direct infection of the neurons (e.g., polyomyelitis) and supporting cells within the spinal cord (e.g., herpes viruses), or as a result of cytotoxic immune responses against viruses (e.g., human T lymphotrophic virus –HTLV- infection-associated myelopathy [HAM]). TM may also follow recent infections (post-infectious TM) such as viral and bacterial systemic infections. Retrospective studies in TM have reported 30-60% of patients describe a preceding infection, usually involving the upper respiratory tract. Some specific infections disorders have been associated with TM:

  • Mycoplasma pneumonia is a rare but important cause of transverse myelitis. Antibiotic treatment can lead to improved outcomes for these patients. This diagnosis is commonly missed because many patients don’t experience respiratory symptoms. It is very important to use new molecular technologies — such as the PCR-based strategies — for diagnosis as older methods of detecting mycoplasma don’t allow the organisms to be found in time for effective treatment.
     
  • Herpes viruses (HV) have also been involved in pathogenesis of TM. Herpes simplex, Varicella zoster and Cytomegaloviruses have been implicated as potential causal agents in TM. PCR studies in CSF are confirmatory assays for demonstrating the association of TM with these infections. If there is confirmation of such an infection, specific antiviral treatment early may be beneficial. However, beyond several days from onset, treatment may be ineffectual.
     
  • Schistosomiasis is an occasional cause of TM in some areas of the tropical world (e.g., Africa, the Caribbean, Brazil, Southeast Asia and the Middle East). It is a parasitic disease produced by worms of the Schistosoma genus which may be acquired in infected waters of some tropical countries. The neurological disease may be diagnosed by MRI and the worm can be discovered through examination of stool specimen. For parasite eggs. Treatment with specific antiparasitic medications may help to eradicate the parasite from the body but the damage of the spinal cord may be irreversible once the parasite is engrafted in the spinal cord.
     
  • Dengue (dengue fever) is an emergent infectious disease in the Caribbean, South and Central America, India and South Asia. Dengue is a viral disease transmitted by the mosquito Aedes aegypti that frequently produces fever, headache, skin rash and severe joint pain and myalgias (“break-bone fever”). Although dengue is asymptomatic in 80% of the cases, complicated cases may have severe complications including neurological problems such as TM and encephalopathies.

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Metabolic and nutritional deficiencies that mimic TM

Some nutritional problems such as vitamin B12 deficiencies may produce myelopathic symptoms that mimic myelopathies. Assessment of vitamin B12 deficiency is critical during early diagnosis studies of patients suspected to have TM as this is a condition is can be treated easily with vitamin B12 supplementation. Copper deficiencies have been found more recently in subset of patients (e.g. following barometric surgery) that exhibit myelopathic or neuropathic symptoms. Copper concentration in blood samples may be helpful to reach the diagnosis of copper deficiency and supplemental treatment may be used for improvement of symptoms. Rarely, some metabolic and mitochondrial disorders may produce myelopathic symptoms that resemble TM. In such cases, more extensive studies to evaluate metabolic pathways, genetic defects in mitochondria genome and energetic studies may be needed.

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Vascular Disease

In some patients diagnosed with TM, the actual cause of myelopathic symptoms are due to abnormalities of the blood supply or vascular disease. These vascular abnormalities may lead to deficits in blood supply that can be viewed as a stroke involving the spinal cord. Just like the brain, blood vessels are required to bring blood supply to the cord tissue and provide oxygen and nutrients, and to remove metabolic products from the cells of the spinal cord. When spinal cord blood vessels become blocked — either by a clot that has traveled to an artery supplying the spinal cord, or by other factors that impede venous drainage — those areas of the spinal cord may suffer tissue damage or become ischemic.

Patients who get TM as a result of vascular disease may be young or older, and frequently do not have risk factors for cardiovascular disease. However, some patients at risk of vascular spinal stroke may have recently undergone a chest or abdominal operation, or experienced mechanical trauma. Other patients develop the disease due to an abnormally organized blood vessels on the surface of the spinal cord (e.g., arteriovenous malformation or arteriovenous fistulas) that either impair blood return away from the spinal cord or cause bleeding into the spinal cord. This diagnosis may be difficult, and is often missed. A physician may choose to use a spinal angiogram or myelogram for diagnosis of vascular problems of the spinal cord. Several procedures exist to halt the symptoms of myelopathy due to vascular disease and involve the use of novel interventional neuroradiological techniques.

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To make an appointment or request a consultation, please call 410-502-7099, option 1.

 

Related Links

Attacking Two Brain Disorders on Multiple Fronts
Uncover how Hopkins researchers are finding new treatments and diagnostic tools to treat multiple sclerosis and transverse myelitis.

Learn more about the relationship between transverse myelitis and multiple sclerosis at Project RESTORE

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