抄録
Pleomorphic adenoma, which is the most common benign tumor in the salivary glands, occurs frequently in the parotid gland, but is relatively rare in the lower lip. We report a case of pleomorphic adenoma which developed from the lower lip in a 72-year-old woman. The lesion was an elastic-hard mass measuring 10×15mm which was painless and movable. The clinical diagnosis was a benign tumor of the lower lip. The tumor was completely resected under local anesthesia. The removed tumor was well encapsulated. The histological diagnosis was pleomorphic adenoma originating from a minor salivary gland of the lower lip. The lower lip healed well and there has been no evidence of recurrence after the operation. However, careful long-term follow-up for relapse and malignant change is required.
