Ductal carcinoma in situ of the breast: influence of age on diagnostic, therapeutic, and prognostic features. Retrospective study of 812 patients.

Background: The objective of this retrospective study was to identify prognostic, diagnostic, and therapeutic disparities between younger (≤ 40 years) and older (> 40 years) women with ductal carcinoma in situ (DCIS) of the breast.

Methods: From 1971 to 2001, all patients treated for DCIS at Institut Bergonié were included in our analyses. Follow-up data was collected over 10 years.