Local recurrence after mastectomy for ductal carcinoma in situ

Local recurrence after mastectomy for invasive cancer generally carries a poor prognosis. Local recurrence after mastectomy for ductal carcinoma in situ (DCIS) is rare and its impact on survival is unknown. Sixty-eight patients were treated with mastectomy for DCIS at the Fox Chase Cancer Center between 1985 and 1996, and only one of these developed a chest wall recurrence. An additional five patients treated with mastectomy at other institutions and referred to Fox Chase after local recurrence were also identified. These six patients had only DCIS as their primary pathology. Four of the six patients were premenopausal (median age 42 years). The median interval to local recurrence was 5.0 years (2.8-9.3 years). The median follow-up from initial diagnosis was 10.5 years (4.3-26.7 years) and 5.2 years (1.4-17.6 years) from recurrence. All of the recurrences were invasive and treatment included wide local excision with radiotherapy in all of the patients followed by adjuvant chemotherapy for the premenopausal patients. None of the patients had metastatic disease at presentation. The disease- free survival from initial recurrence was 83% and 63% at 5 and 10 years, respectively. The 5- and 10-year survival following local recurrence was 80%. One patient died 3.6 years after recurrence with metastatic disease, while a second patient developed metastatic disease 11.8 years after her initial recurrence. The remaining four patients are alive (NED), ranging from 1.4 to 10.7 years following their local recurrence. Local recurrence following mastectomy for DCIS is rare, usually invasive, and may have a long interval to failure. Salvage using conventional multimodality therapy appears to result in long-term survival.