内直筋麻痺による複視を呈した蝶形骨洞炎の1例

A Case of Isolated Palsy of the Medial Rectus Muscle Branch of the Oculomotor Nerve due to Sphenoid Sinusitis

　はじめに

　蝶形骨洞や後部箭骨洞の急性炎症や粘液嚢胞に続発する視力低下，眼球運動障害など視力障害を伴わず眼球運動障害だけを呈する症例の報告は少ない^1）。

　今回われわれは，一側の内直筋麻痺による複視だけを合併した蝶形骨洞炎症例を経験したので報告する。

A 70-year-old male suddenly complained of dou-ble vision and headache. Double vision wasmanifested due to the disturbance of the right medial rectus muscle. MRI and CT revealed sphenoid sinusitis. Within 10 days after surgical drainage of the sphenoid sinus, the patient recover-ed fully from palsy of medial rectus muscle.

This case suggested that the otolaryngologists should diagnose oculomotor disturbance caused by sphenoid sinusitis and should perform drainage of sinus.