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  • Title: Syringomyelia-like syndrome in neuromyelitis optica spectrum disorder complicated with Sjogren's syndrome: a case report.
    Author: Li X, Lu Z, Wang Y.
    Journal: BMC Neurol; 2018 Oct 09; 18(1):168. PubMed ID: 30301458.
    Abstract:
    BACKGROUND: Besides CSF-flow obstruction, syringomyelia is associated with inflammatory spinal cord lesions. However, syringomyelia-like syndrome concomitant with neuromyelitis optica spectrum disorder (NMOSD) and primary Sjogren's syndrome (pSS) is extremely rare. Here, we would like to report a case of a patient with syringomyelia-like syndrome in NMOSD complicated with Sjogren's Syndrome. CASE PRESENTATION: A 64-old male Han Chinese, presented with three episodes of acute demyelinating processes in the central nervous system within 5 years. Firstly, he presented with ascending left lower extremity weakness and numbness, and initially progressive loss of vision in the right eye before 5 years, and subsequently in the right eye 2 months later. High dose corticosteroid therapy was prescribed for this attack. Second, he suffered from refractory gastrointestinal symptoms. such as nausea, vomiting, abdominal pain and early satiety. After the second episode, he received long-term azathioprine and prednisone treatment in low dosages. Six months before admission, he developed the lower back pain and numbness in lower limbs, and urinary incontinence. This time, he complained of acute onset of right lower limb paralysis, paresthesia and urinary incontinence. MRI of the spine revealed a syringomyelia extending from the C7 to T4 levels with serum positive anti-aquaporin-4 antibodies (AQP4-Ab) (indirect immunofluorescence on AQP4 transfected cells). he was serologically positive for both anti-Sjögren's syndrome-related antigen A and B antibodies and there was reduced salivary flow on scintigraphy. Lip salivary gland (LSG) biopsies were graded (grade four lymphocytic infiltration) according to the Chisholm and Mason classification system and by morphometric analysis. And finally, diagnosed as syringomyelia-like syndrome in NMOSD complicated with Sjogren's syndrome. CONCLUSIONS: Although extremely rare, This index patient highlights that syringomyelia could be associated with underlying NMOSD and pSS, and autoimmune disorders should be considered in the initial differential diagnosis, This is very helpful for the therapeutic implications and evaluating curative effect.
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