後頭蓋窩硬膜下水腫と水頭症を呈した小児の1手術例

A Case Presenting with Hydrocephalus and Posterior Fossa Subdural Effusion

Ⅰ．はじめに

　小児の硬膜下水腫はテント上に発生することが多く，原因としては，外傷や頭蓋内感染症，脳室—腹腔短絡術後のover drainageなどが知られている．

　われわれは，ウイルス性髄膜炎後に後頭蓋窩硬膜下水腫と水頭症を発症した小児の1手術例を経験したので報告する．

We report a case of hydrocephalus due to posterior cranial fossa subdural effusion. The patient was a 4-year-old boy, presenting headache and nausea, with a medical history of viral meningitis 2 months before. Cerebrospinal fluid provided no evidence of infection, and symptoms caused by increased intracranial pressure gradually deteriorated, al-though glycerol infusion was effective temporarily. Computed tomography revealed marked ventriculomegaly with subdural effusion in the right posterior cranial fossa.