顔面神経Neuroma—3症例の報告

FACIAL NERVE NEUROMA, A REPORT OF THREE CASES

　I．緒言

　顔面神経Neuromaは比較的まれな疾患であり，徐々に進行する顔面神経麻痺を特徴とする。しかし難聴，耳鳴，顔面痙攣その他の症状で初発する例もかなりの頻度でみられる。また顔面神経麻痺もBell麻痺の如く突然発症する例や，寛解のみられる例もある。

　ここではわれわれが経験した3症例について報告し，症状・診断・治療について述べてみた。

　Three cases of facial nerve neuroma which orginated from the vertical portion of the facial nerve are reported.

　All three cases complained of facial nerve spasm followed by facial nerve palsy.

　In making a diagnosis of the facial nerve tumor, it is essential to note the presence of isolated twitching in orbicularis oris muscle and slowly progressive facial nerve weakness which follows facial spasm. Particularly when no abnormalities are found through various examinations inclusive of polytomography, the presence of facial nerve neuroma should be suspected ; a careful follow-up should be performed.