A Case of Traumatic Chiasmal Syndrome Presenting with Bitemporal Upper Quadrantanopsia Yasuji MIYAKITA 1,3 , Yoshio TAGUCHI 1 , Motoshi MATSUZAWA 1 , Hirobumi NAKAYAMA 1 , Hiroaki SEKINO 2 1Division of Neurosurgery, St. Marianna University Yokohama City Seibu Hospital 2Department of Neurosurgery, St. Marianna University School of Medicine 3Neurosurgery Division, National Cancer Center Hospital Keyword: traumatic chiasmal syndrome , upper quadrantanopsia pp.547-550
Published Date 2002/5/10
DOI https://doi.org/10.11477/mf.1436902217
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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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