Figure 2

Suggested new entities of lobular neoplasia. (a) Regressed atypical lobular hyperplasia (ALH; magnification 200×) is a pattern of ALH present in postmenopausal women, in which the ALH lesion is less developed; has a more varied population of lobular cells than classical ALH, with the presence of apoptotic bodies; and meets the minimum criteria for diagnosis. (b) Tumor-forming lobular carcinoma in situ (LCIS; 20×) is defined by clustering of LCIS in at least two adjacent lobular units, and may have specific implications for cancer risk and required excision. Lesions were stained with hematoxylin and eosin.