著明な頭蓋外進展を伴ったTrigeminal Neurinomaの1例

Trigeminal Neurinoma with Massive Extracranial Extension, Report of a Case

Ⅰ．はじめに

　頭蓋内腫瘍としてのtrigeminal neurinomaは比較的稀な腫瘍に属する．本症は，一般に従来の報告からみてもその発育がごく緩徐な進行をなすため診断は遅れがちになる．最近われわれは，頭蓋内のみならず著明に頭蓋外に進展をなした本症の1例を経験したので報告し，併せてCTによる検索，特に冠状断層によるCTが腫瘍の進展程度を知る上に有用であることを強調した．

It appears that more than a hundred cases of trigeminal neurinomas have hitherto been reported, but massive extracranial extension of a benign neurinoma into the sphenoid sinus and soft part tissue of the neck is unusual.

A 36-year-old woman was admitted to our clinic with complaints of left blindness, vertigo and left nasal stuffiness. Neuroradiological examinations, including plain craniography, angiography and CT, showed a huge mass which destroyed the left middle fossa and extended into the left sphenoid sinus and soft part tissue of the neck.