長期経過をたどった下唇血管平滑筋腫の1例

概要

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Angioleiomyoma is a benign tumor of smooth muscle origin that commonly arises in the subcutaneous tissue of the lower extremities and rarely occurs in the oral mucosa.We report a case of angioleiomyoma arising in the lower lip. An 57-year-old woman was referred to our hospital because of a painless tumor of the lower lip. She had the lesion for more than 35 years. The clinical diagnosis was a benign tumor of the lower lip, and the tumor was surgically extirpated under local and intraveneous anesthesia. Microscopically, the tumor was composed of numerous vascular channels of venous type with thick muscular walls, and smooth muscle bundles in the tumor were not so compact.Immunohistochemical analysis showed positive reactions for α-smooth mucle actin (SMA) and desmin in the tumor cells. Histopathologically, the specimen was diagnosed as angioleiomyoma. Postoperative observation has revealed no recurrence as of 2 years after the operation.
Japanese Society of Oral and Maxillofacial Surgeonsの論文