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Paraneoplastic Neuromyelitis Optica Spectrum Disorder Associated with Metastatic Carcinoid Expressing Aquaporin-4

Overview
Journal JAMA Neurol
Date 2014 Apr 16
PMID 24733266
Citations 19
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Abstract

Importance: Reports of neuromyelitis optica spectrum disorder (NMOSD) occurring in the setting of neoplasia suggest that aquaporin-4 autoimmunity may in some cases have a paraneoplastic basis.

Observations: In this case report, we describe a patient with NMOSD whose test results were seropositive for aquaporin-4 IgG and who had a hepatic metastasis from a small-bowel neuroendocrine tumor. The tumor cells expressed aquaporin-4 immunoreactivity. She presented to the Neurology Department at Wayne State University with bilateral leg weakness, ascending paresthesias, and decreased sensation.

Conclusions And Relevance: This case extends the context of NMOSD as a paraneoplastic disorder.

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