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Ⅰ.はじめに
比較的稀な外傷性視交叉症候群の1例を報告する.さらに本症例が示した両耳側上4分の1盲の成因を,外傷機転,解剖学的知見を中心に考察する.
A 22-year-old woman was involved in a motor vehicle accident and suffered a craniofacial injury. The patient was treated conservatively with a diagnosis of cerebral contusion in the frontal base confirmed with MR images. When the patient regained consciousness one week after the accident, she had a complete form of bitemporal upper quad-rantanopia. A bone window level CT scan showed a linear fracture in the middle of the frontal base running longitudi-nally and extending posteriorly down to the sella turcica and clivus. Axial MR images parallel to the optic pathway revealed a T2 bright lesion in the anterior half of the optic chiasm.
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