We studied the association of quadrantectomy and irradiation in 238 patients with a breast carcinoma treated from 1974 to 1984 in the Alexis-Vautrin Center. Five and ten year survival rate are respectively 89 and 77%. Local relapse rate at five and ten year are 2, and 9%. Local relapse rate is correlated with a young age, a high tumor grade and an internal site of tumor. We studied the cosmetic and functional results and compared objective results according to subjective self-evaluation by the patients.