Abstract
We report a relatively rare case of mucinous carcinoma of the breast which showed a local recurrence 15 years after lumpectomy. A 64-year-old female was seen at the hospital because of a elastic derb mass in the right breast. On physical examination, a 1.8×1.6cm well-defined and movable mass with smooth surface was palpated in the B region of the right breast, which was the same place of the previous operative scar. Aspiration biopsy cytology revealed class V. Breast-conserving surgery (quadrantectomy with axillary dissection) was performed. Histological findings were mucinous carcinoma, n0, lyo, v0, f, with extensive intraductal spread. Serial examination of surgical margin in the resected specimen showed marked cancerous lesions. Because of diffuse invasion of mucinous carcinoma, she was underwent total mastectomy.