This article will focus on atypical hyperplasia of both ductal and lobular type of the female breast. Both of these lesions are considered benign but pre-malignant or high-risk lesions for development of more advanced neoplasia. Atypical ductal hyperplasia (ADH) is a relatively common lesion ...
Atypical hyperplasia of the breast is defined as abnormal epithelial proliferative breast lesions that are not qualitatively or quantitatively abnormal enough to be classified as carcinoma in situ. Atypical hyperplasia is a premalignant condition and may occur in either ductal or lobular epithelium. This ...