IMR Press / CEOG / Volume 46 / Issue 2 / DOI: 10.12891/ceog4445.2019

Clinical and Experimental Obstetrics & Gynecology (CEOG) is published by IMR Press from Volume 47 Issue 1 (2020). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with S.O.G.

Open Access Case Report
Anti-N-methyl-D-aspartate receptor encephalitis associated with a tiny ovarian teratoma diagnosed by exploratory laparoscopy: report of two cases
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1 Department of Obstetrics and Gynecology, Aso Iizuka Hospital, Fukuoka, Japan
*Correspondence: (H. TSUJIOKA)
Clin. Exp. Obstet. Gynecol. 2019, 46(2), 305–308;
Published: 10 April 2019

Anti-N-methyl-D-aspartate (NMDA) receptor encephalitis is the most common form of paraneoplastic encephalitis that is associated with teratomas. Because removal of the tumor leads to better clinical outcomes, determining the location of teratomas is essential. The authors report two cases of anti-NMDA receptor encephalitis with a small ovarian teratoma that could not be detected by usual imaging. Both cases had the diagnosis confirmed laparoscopically.

Anti-N-methyl-D-aspartate receptor encephalitis
Ovarian teratoma
Figure 1.
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