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特発性低髄液症は突発性にあるいは数分から数時間以内に激しい頭痛を呈する雷鳴頭痛の1つで,くも膜下出血などの脳血管障害との鑑別を要する。本症は早期診断・治療により予後良好例が多いが,遷延・慢性例では多彩な症状で診断困難となり,ひいては重篤な合併症あるいは不幸な転帰をたどる。自験例を提示し本症の多彩な一面を示すとともに,脳脊髄液吸収路の免疫組織化学染色と画像所見との関連について検討した。
Abstract
Idiopathic intracranial hypotension (hypovolemia) is almost exclusively provoked by cerebrospinal fluid (CSF) leakage through spontaneously rent dural sac. An initial clinical feature of a severe headache with or without nausea/vomiting should be differentiated from a life-threatening stroke. An early diagnosis and proper therapy may guarantee a good outcome, while delays may promote complicated manifestations and irreversible poor outcome in a few patients. In this article, neuro-imaging studies of some demonstrable cases are presented and the outlets of the spinal CSF and spinal CSF pathways are shown with immunohistological staining.
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