Abstract
Pleomorphic adenoma is a benign tumor that is rare in the breast but common in the salivary grand. A 41-year-old woman presented with a hard mass in the right breast. She had had a breast tumor excised in the same quadrant 5 years and 12 years prior. Core needle biopsy revealed a pleomorphic adenoma. It was excised with free margins. The postoperative and clinical follow-up during the last 2 years has been uneventful.
Recurrences following surgery for pleomorphic adenoma have been attributed to inadequate surgery and multifocality, as well as malignant transformation, which is a well-known entity in the salivary gland. Due to the risk of recurrence and malignant transformation, complete excision of the lesion with an adequate safety margin is required.
