下唇に発生した血管平滑筋腫の1例 A case of angioleiomyoma of the lower lip
Angioleiomyoma is a benign tumor arising from perivascular smooth muscle cells. This tumor usually occurs in the lower extremities of middle-aged to elderly women, and rarely develops in the oral region. We report a case of angioleiomyoma arising in the lower lip. An 88-year-old woman was referred to our hospital because of apainless tumor of the lower lip. The clinical diagnosis was a benign tumor of the lower lip, and the tumor was surgically extirpated under local anesthesia. Microscopically, the tumor was composed of numerous capillaries surroundedby smooth muscle-like tumor cells. Immunohistochemical analysis showed positive reactions for α-smooth muscle actin (SMA) and desmin in the tumor cells. Histopathologically, the specimen was diagnosed as angioleiomyoma. Postoperative observation has revealed no recurrence as of 6 months after the operation.
日本口腔外科学会雑誌 52(11), 596-600, 2006-11-20
Japanese Society of Oral and Maxillofacial Surgeons