鼻腔神経鞘腫の1例

A Case of Nasal Neurilemmoma

　はじめに

　神経鞘腫は身体のあらゆる部位に発生する可能性があるが，術前の確定診断は得られにくく，組織学的検査が重要である。また，治療は外科的切除のみであり，完全に摘出しなければ再発を繰り返したり，悪性化の経過をたどることもあるため十分な注意が必要である^1,2）。耳鼻咽喉科領域では聴神経に発生しやすく，鼻副鼻腔の神経鞘腫に遭遇することは少ない。今回われわれは，鼻腔原発の神経鞘腫症例を経験したので報告する。

Schwannoma in the nasal cavity and paranasal sinuses is rare, A 69-year-old male with a history of repeated epistaxis presented with a reddish tumorfound in the left nasal cavity. CT and MRI showed a smooth surfaced solitary tumor. The tumor was surgically removed using lateral rhinotomy by means of a Moore's incision. The diagnosis of the tumor was neurilemmoma on histological, immuno-histochemical and ultrastructural examinations. It was impossible to determine from which nerve it was derived. The postoperative course was satis-factory without signs of recurrence after 5 months.