[Pathological anatomy of breast cancers].

Carcinomas are by far the most frequent malignant tumors of the breast. Screening by mammography has considerably increased the number of breast biopsies for mammographic abnormalities without a palpable mass. The role of the pathologist is to: 1. accurately diagnose specimens and ensure quality control, and 2. provide clinicians with all the informations required for staging and appropriate treatment without being led astray by the new prognostic factors based on biological markers in fashion.