Paraneoplastic Neuromyelitis Optica Spectrum Disorder as Presentation of Esophageal Adenocarcinoma.

Neuromyelitis optica spectrum disorders are a group of relapsing, inflammatory, demyelinating neurologic syndromes involving the central nervous system associated with antibodies against aquaporin-4. Although most commonly an idiopathic autoimmune condition, neuromyelitis optica may occur as a paraneoplastic syndrome in rare instances. We report a case of transverse myelitis caused by paraneoplastic neuromyelitis optica as the presenting clinical syndrome in a patient with esophageal adenocarcinoma.