2023 Volume 36 Issue 2 Pages 222-227
We report a case of schwannoma that developed in the masseter muscle. The patient was a 33-year-old woman who was referred to our hospital due to swelling of the right cheek. An elastic movable mass 40mm in diameter was found in the masseter muscle. Contrast-enhanced computed tomography （CT） showed poor enhancement. Malignant atypical cells were not detected using fine-needle aspiration. The lesion was diagnosed as schwannoma and resected under general anesthesia. We made an S-shaped incision from the anterior part of the ear. During the operation, a nerve stimulator was used to identify the nerve originating from the masseter muscle nerve, and the tumor was removed by intercapsular resection. Postoperative pathological examination confirmed the diagnosis of schwannoma. No postoperative neurological deficits and no recurrence of the tumor were observed, and the clinical course was uneventful.
