Symmetrical external capsule lesions in a patient with herpes simplex encephalitis.
A 7-year-old boy had symmetrical transient high signal lesions in the external capsules on T2-weighted image during the recovery phase of herpes simplex virus (HSV) encephalitis. Although this finding has never been reported in HSV or other viral encephalitis, a postinfectious allergic mechanism is suspected in this patient. With the development of magnetic resonance imaging and other neuroimaging studies, a more detailed analysis of central nervous system is now possible.
Department of Pediatrics, Urafune Hospital of Yokohama City University, Japan.
S
S
Kimura
A
A
Nezu
H
H
Osaka
K
K
Saito
D015526:AIDS Dementia Complex / Q000150:complications / Q000382:microbiology / Q000503:physiopathology*; D001921:Brain / Q000000981:diagnostic imaging / Q000503:physiopathology*; D002648:Child; D002653:Child Behavior Disorders / Q000209:etiology / Q000503:physiopathology; D004828:Epilepsies, Partial / Q000150:complications / Q000503:physiopathology; D006801:Humans; D007074:Immunoglobulin G / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D008279:Magnetic Resonance Imaging; D008297:Male; D011859:Radiography; D018139:Simplexvirus / Q000302:isolation & purification*
D007074:Immunoglobulin G; D007075:Immunoglobulin M