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I.はじめに
脳腫瘍が頭蓋内出血をきたすことはよく知られた事実であるが,その頻度は決して高くない.すなわち出血性脳腫瘍の頻度は過去の報告では1.4-5.1%3,23,28)であり,特発性頭蓋内出血の中で脳腫瘍が発見される頻度は1-10%12,16,20,23)である.また小脳のastrocytomaに頭蓋内出血を合併した報告は,われわれが知る限りでは数編を数えるにすぎない.
最近,われわれは腫瘍からの出血により卒中様に発症した小脳のastrocytomaの小児例を経験したので文献的考察を加え報告する.
A rare case of cerebellar astrocytoma presenting with cerebellar hemorrhage is reported.
On reviewing the literature, we could collect only four other cases of spontaneous hemorrhage in cere-bellar ast rocytomas.
Case : On April 5. 1984, a 15-year-old boy noted a sudden onset of headache, vomiting and vertigo and became lethargic and confused. He was admitted on the next day. General examinations, including blood-pressure, temperature and laboratory tests, were found to be normal upon admission. The patient was in somnolence with nystagmus and left dysdiadocho-kinesis.
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