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Updated: Jan 7, 2026

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate NMDA Receptor in Blood
Published on: January 9, 2018
Immature ovarian teratomas in anti-NMDA receptor encephalitis
Kristen Simone1, Nabeela Nathoo2, Allyssa Hooper1
1Department of Obstetrics & Gynecology, University of Alberta, Edmonton, AB, Canada.
Abstract:
Anti-N-methyl-d-aspartate receptor autoimmune encephalitis (NMDAR-AIE) is an immune-mediated neurological disease with manifestations including altered mental status, neuropsychiatric disturbance, movement disorders, seizure, and dysautonomia. NMDAR-AIE is associated with ovarian teratoma in half of cases, typically mature teratoma. NMDAR-AIE is rarely associated with immature ovarian teratomas. Here, we describe three cases of NMDAR-AIE associated with immature ovarian teratomas. We review diagnosis and management of immature ovarian teratomas in NMDAR-AIE as a collaboration between gynecology and neurology, with multi-disciplinary recommendations provided regarding workup and management.
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