Atypical Lobular Hyperplasia and Lobular Carcinoma In Situ
Despite the earlier description by Ewing , the term lobular carcinoma is largely credited to Foote and Stewart  who, in 1941, published their seminal paper describing a detailed morphologic analysis of a distinctive subgroup of in situ carcinoma of the breast. Almost 40 years after the first description of lobular carcinoma in situ (LCIS), Haagensen et al.  published their own experience with this disease and concluded that “lobular neoplasia” was a more appropriate term for this lesion, as few cases appeared to progress to invasive carcinoma. With increasing recognition of LCIS, it became apparent that less well-developed forms were more frequently seen in the breast. Page et al.  used the term atypical lobular hyperplasia for these lesions.
KeywordsAtypical lobular hyperplasia Lobular carcinoma in situ Morphological features
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