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左中脳梗塞で左内側縦束症候群(MLF)と一過性の幻視症を呈した1例を報告した。症例は65歳,男性。急性期のMRIのT2強調像で中脳被蓋部に限局する高信号領域を認め,50日後MRIでは中脳傍正中被蓋に限局する高信号領域に縮小していた。これは中脳病変による幻視症状が中脳被蓋傍正中病巣により生じるとする説を支持するものである。
A 65-year-old male suffering from left MLF syn-drome accompanied by transient hallucinose pedon-culaire caused by the midbrain infarction is report-ed. In the first night of his admission with MLF syndrome, he complained of sleeplessness followed by transient visual hallucination. The hallucination was vivid and colored scene in which many stran-gers were seen around the patient, and he was well oriented without dreadfulness at that time. A small infarction in the left tegmentum was revealed by MR imaging, which was supposed to cause the hallucination.
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