太田氏母斑，眼球黒色症に視交叉部メラノーマの発生した症例

A melanoma of the optic chiasm occurred in a case of Ota's naevus and melanosis bulbi

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　瞼〜眼球，視神経，脳膜，脳皮質，眼窩骨壁等に広汎なメラノージスがあつた患者で，視交叉部のメラノーマが発生し，視交叉症候群を起した症例である。

(1) A 37 years old male was found to have Ota's naevus and melanosis bulbi (lower palpebral conjunctiva, sclera, iris and papilla) in his right eye. This right eye lost its visual acuity 3 years ago and at the same time temporal hemianopsia and visual disturbance appeared in the left eye.

(2) A tumor on the optic chiasm was suspected by angiography, and a melanoma was found in the right posterior of the chiasma by craniotomy. Besides, melanosis was found in the orbital wall, meninges, cerebral cortex and right optic nerve.