抄録
Adenoid cystic carcinoma rarely develops in the minor salivary gland. We report a case of adenoid cystic carcinoma that developed in the upper lip. A 46-year-old woman had had a painless swelling on the right side of the upper lip for 12 years. There was a welldelineated swelling with an irregular surface (10×8mm). It was elastic, hard, and movable on palpation. Computed tomography (CT) and ultrasonography showed a lesion with a welldefined, high density rim. Histopathologically, an aspiration biopsy specimen suggested adenoid cystic carcinoma. The tumor was excised with a 10-mm safety margin under general anesthesia.
Histopathological examination indicated adenoid cystic carcinoma. There has been no evidence of recurrence as of 24 months after the operation.
