蝶形骨洞骨腫の2例

Osteoma of the Sphenoid Sinus: Report of 2 cases

I．はじめに

　骨腫（osteoma）は頭蓋骨および顔面骨に好発する病変で，副鼻腔の中では前頭洞に最も多い，しかし，蝶形骨洞発生例は極めて少なく，これまでに16例の報告をみるにすぎず，このうち組織学的に証明されたものは2例だけである，最近われわれは，蝶形骨洞に発生した骨腫の2手術例を経験したので，若干の文献的考察を加えて報告する．

Although osteoma of the paranasal sinus is com-paratively common, involvement of the sphenoidal sinus region is extremely rare. Lame reported that a total of twelve cases had been described in the European literature since 1800. Mikaelin, Kulczynski and Dolan, since then, described three cases. This paper deals with two surgical cases of sphenoidal sinus osteoma, reviewing literature on paranasal sinus osteoma and differential diagnosis in the sphenoidal sinus lesion.

Case 1. A 20-year-old man was referred to us by an ophthalmologist, complaining of left visual dis-turbance (visual acuity: 0.02).