Procedure for Cases of Intraductal and Proliferative Lesions
The adequate classification of proliferative lesions is important because of its association with the risk of developing invasive breast carcinoma, especially when diagnosed between 35 and 55 years of age. Several criteria have already been described for the classification of atypical hyperplasias of ductal and lobular patterns, without a definite consensus among the authors, although there is common agreement that they share similar risks for the development of invasive breast carcinoma. The importance of histopathological differentiation of atypical ductal hyperplasias with low-grade ductal carcinoma in situ (DCIS) is emphasized, which requires a completely different treatment.
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