Long-term results of neoadjuvant radiation therapy for breast cancer.

Our aim was to determine the long-term outcome and the possible role of neoadjuvant (preoperative) radiation therapy for breast cancers unsuitable for primary conservative surgery. From 1977 to 1992, 75 unifocal non-inflammatory and non-metastatic T2 and T3 breast cancers were treated in our department. All these patients underwent initial radiotherapy, followed by secondary limited surgery. A population of 74 patients, aged from 32 to 82 years (median 56 years), presenting 49 T2 and 26 T3 tumors, was studied. Seventy-two patients (96%) underwent secondary tumorectomy and three patients (4%) reduction mammaplasty. The secondary tumorectomy was followed by a postoperative boost. There were nine recurrences, treated by mastectomy in eight cases and by tumorectomy in one case. Twenty-five patients showed secondary dissemination. Forty-seven patients are still alive and free of disease. The cosmetic results were considered excellent or satisfactory in 71 cases. Under good conditions, preoperative radiotherapy (as well as preoperative chemotherapy) allows the possibility of conservative surgery for cancers of more than 3 cm. The choice between the two modalities depends on the patient's condition and on a precise analysis of all prognostic factors that would justify the need for systemic treatment.