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Case Reports
. 2015;21(4):399-402.
doi: 10.5761/atcs.cr.14-00300. Epub 2015 Apr 24.

Paraneoplastic extralimbic encephalitis associated with thymoma: a case report

Masato Aragaki  1 , Yasuaki Iimura, Kenichi Teramoto, Nagato Sato, Kazuyuki Hirose, Naoto Hasegawa
Affiliations
Case Reports

Paraneoplastic extralimbic encephalitis associated with thymoma: a case report

Masato Aragaki et al. Ann Thorac Cardiovasc Surg. 2015.

Abstract

Here we a report a rare case of extralimbic encephalitis associated with thymoma. A 66-year-old woman was admitted to our hospital with cramping in her right leg and inability to walk. Magnetic resonance imaging of the brain showed multifocal high intensity signals on T2 flare images in the cerebral cortex, and chest computed tomography showed a 5-cm anterior mediastinal mass, which was considered to be a thymoma. We speculated that she had paraneoplastic encephalitis associated with thymoma. She underwent a thymectomy and was diagnosed with type B1 thymoma. On postoperative day 6, her neurological symptoms began to improve. On postoperative day 31, she was discharged without complications. Limbic encephalitis is a paraneoplastic neurological syndromeassociated with thymoma, but extralimbic encephalitis has been described in the literature very rarely. We report the case of extralimbic encephalitis associated with thymoma along with a literature review.

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Figures

Fig. 1
Fig. 1
(a) Preoperative brain magnetic resonance imaging (MRI) showed multifocal hyperintense lesion on T2 flare images in the cerebral cortex. (b) Preoperative chest computed tomography (CT) showed a 5 cm anterior mediastinal mass which was considered to be a thymoma.
Fig. 2
Fig. 2
Follow-up brain magnetic resonance imaging (MRI) showed that the brain lesions had disappeared.
See this image and copyright information in PMC

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