咬筋内血管腫の1例

A Case of Intramuscular Hemangioma in the Masseter Muscle

I．はじめに

　血管腫は，頭頸部領域において口唇，舌，頬粘膜に好発するが，稀に咬筋や僧帽筋などの筋内に発生する^1）。咬筋内血管腫は，咬合すると腫瘍が突出することが多く，咬筋部勃起性血管腫とも呼ばれる。

　今回われわれは，咬合により突出する咬筋内血管腫を経験したので，考察を加えて報告する。

　Intramuscular hemangioma in the masseter muscle is also called as erectile hemangioma because it bulges when a patient chewes.

　A 15-year-old woman presented with an intramuscular hemangioma in the masseter muscle. The tumor was removed with an extraoral approach without causing facial nerve palsy nor palotid gland duct destruction. Histopathological diagnosis was cavernous hemangioma. After the operation,there was no evidence of reccurence for 6 years.