抄録
A 25-year-old man with masseteric hypertrophy is reported. He was operated on by the external approach according to modified Gurney's method.
CT scan was very useful for diagnosing this case. Pathologic examination of the hypertrophied masseter showed normal striated muscle tissue.
Surgical correction of the appearance should be performed if the patient desires esthetic repair. The extraoral approach is recommended because it is easier than the intraoral approach. The cause of masseteric hypertrophy still remains obscure, postoperative care is necessary for a long time.
