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緒言
頭蓋咽頭腫は,トルコ鞍上の上皮性の腫瘍で胎生期の頭蓋咽頭管の遺残より発生する。本腫瘍は,脳腫瘍の3〜4%を占めるといわれるが,その発生の機転からみで,小児期に症状をあらわすことが多く,14歳以下では9%を占める1)。しかし,頭蓋咽頭腫68例のうち24例は,50歳以上で初発症状をあらわしたという報告もある2)。
われわれは,片眼の中心暗点ではじまつた成人例,頭痛・発熱・片眼視力障害ではじまつた小児例,外傷後のうつ血乳頭ではじまつた幼児例の3例の異なつた臨床像を呈した頭蓋咽頭腫を経験した。
Craniopharyngioma is the congenital tumor which arises from the epithelial remnants of embryonal craniopharyngeal duct. The occu-rrence of these tumors has been quoted from 3 to 4% of all intracranial tumors. Since the tumor is congenital, the incidence makes up 9% in children under fourteen years of age. But an appreciable proportion of patients have their first symptoms in the middle life.
The size and position of the tumor deter-mines the nature of the symptoms. Also the speed of the neoplasmic growth modifies the clinical signs. Visual failure from compression of the optic nerve and chiasm is common in any group.
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