[Local Recurrence of Breast Cancer Eight Years after Mastectomy-A Case Report]

A 68-year-old woman had undergone mastectomy for right breast cancer when she was 60 years of age. The histopathological diagnosis had been scirrhous carcinoma, T1N0M0, stage Ⅰ. She had received anastrozole as the adjuvant therapy for 5 years. Eight years after the operation, she consulted our department because of a lump on the right chest wall. The metastatic work-up revealed no evidence of metastases. Tumorectomy was performed. Histopathological findings from the surgically resected specimens showed scirrhous carcinoma, positive for ER and PgR, and negative for HER2/neu protein expression. The Ki-67 positive cell index was 25%. Therefore, we diagnosed the patient with local recurrence of breast cancer. Since surgical margins were positive, irradiation was performed at the recurrence site, and letrozole was administered. Local recurrence is a target of the curative treatment and requires a multidisciplinary approach, including surgery, drugs, and radiation therapy. We report a case of local recurrence of breast cancer 8 years after mastectomy.