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I.はじめに
外傷性髄液漏は側頭骨及び,頭蓋底骨折に伴いしばしば遭遇する疾患である2).それ以外に髄液漏は中耳及び側頭骨の手術損傷,炎症性耳疾患,脳神経外科領域では聴神経腫瘍の術後などに認められるが9),こよような原因を持たない,いわゆる特発性髄液漏と呼ばれる疾患群がある1,14,20,24).このなかに,内耳奇形を合併し,幼小児に発症して特徴的な臨床像を示す1群が報告されている4,13,15).今回われわれは,髄膜炎を繰り返した特発性髄液漏の1例を経験したので報告する.
A case of inner ear anomaly (Mondini dysplasia) associated with recurrent meningitis found in a 10 year-old boy is reported.
The patient had suffered from bacterial meningitis and CSF rhinorrhea five times in 7 years. The origin of CSF leakage had not been detected by bifrontal cra-niotomy or trans-sphenoidal operation. In May 1985, the dysplasia of the temporal bone and the inner ear had been pointed out by an otologist. And he under-went operations a few times for closing the CSF fistula at the floor of the internal auditory meatus by trans-labyrinthine approaches, but in vain.
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