[Treatment of intraductal carcinomas. 91 cases treated at Oscar-Lambret Center]

During a period of 10 years, 91 ductal carcinomas in situ (DCIS) were operated. After a study of clinical and therapeutics characteristics, the evolution of the DCIS was studied. Eleven recurrences were seen in a period of 41 months. The actuarial risk of recurrence was 11% at 5 years and 17% at 8 years. About half of the recurrences were invasive and occurred 10 times out of 11 in the initial area or nearby. Among several factors studied, the association of radiotherapy with conservative surgery was the only one which reduced significantly the risk of recurrences.