期刊
EUROPEAN JOURNAL OF RADIOLOGY
卷 38, 期 1, 页码 55-58出版社
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0720-048X(00)00293-X
关键词
diaschisis; brain SPECT; crossed cerebellar diaschisis; herpes simplex encephalitis; MRI
Diaschisis is extremely rare in patients with viral encephalitis, We report the phenomenon of crossed cerebellar diaschisis (CCD) in a 73-year-old man with acute herpes simplex type-1 (HSV-1) encephalitis. The diagnosis of HSV-1 encephalitis was confirmed by detecting HSV-1 deoxyribonucleic acid in the cerebrospinal fluid (CSF). Magnetic resonance images (MRI) showed enhancing lesions at bilateral temporal lobes. insular cortices. and right frontoparietal lobes. increase signal intensity on T2-weighted images was seen in the mesecephalon. Technetium-99m ethyl cysteinate: dimer (Tc-99m-ECD) single photon emission computed tomography (SPECT) of the blain showed a large area of hypoperfusion in the right frontotemporoparietal lobes. The side-to-side cerebellar count revealed 19%, reduction of the radioisotope tracer uptake in the left cerebellum The phenomenon of CCD was proposed to be due to both anterograde disconnection of the corticopontocerebellar tracts and retrograde deafferentation of dentatothalamocortical projections. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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