A Case of Encephalitis with a Reversible Splenial Lesion on a Diffusion Weighted MRI Image

J Korean Neurol Assoc > Volume 24(5); 2006 > Article

Journal of the Korean Neurological Association 2006;24(5): 507-510.

확산강조 뇌자기공명영상에서 가역적 뇌량 팽대 병변을 보인 뇌염 1예

서희정, 김수연 김월민 홍윤정 손종희 이상무 최휘철

한림대학교 의과대학 신경과학교실

A Case of Encephalitis with a Reversible Splenial Lesion on a Diffusion Weighted MRI Image

Hee-Jeong Seo

Department of Neurology, Hallym University College of Medicine, Chuncheon, Korea

Abstract

Reversible splenial lesion may occur in encephalitis rarely. A 21-year-old man was admitted with viral encephalitis. High signal on the diffusion MRI and low signal on the ADC map image was showed in the splenium. As the patient improved, the lesion suggestive of cytotoxic edema was completely resolved one month later. Although the concrete pathophysiology of focal cytotoxic edema in encephalitis is unclear yet, MRI is valuable diagnostic tool to manage encephalitis in the view of prognosis.KeyWords:Splenium, Encephalitis, Diffusion MRI