Adenomyoepithelioma of the breast.

摘要: Adenomyoepithelioma, an uncommon benign breast tumor in which the proliferation of myoepithelial cells is a conspicuous component, was examined 18 women. The initial clinical finding usually mass periphery breast. Grossly, adenomyoepithelioma produced circumscribed, firm (average, 1.5 cm) with nodularity and cysts noted some instances. Proliferating gland-forming epithelial were all cases. In most, polygonal had clear vacuolated cytoplasm. Myoid, spindle-cell differentiation rarely prominent, but this type present focally most Intraductal papillary adenomyoepitheliomatous hyperplasia within tumors sometimes surrounding ducts. Immunohistochemical studies distinguished from cells. Hormone receptor showed four estrogen positive, two negative, five progesterone negative. One patient who underwent immediate mastectomy well 4 years later. Two 17 women treated by local excision recurrent same All patients remain 0.5 to 5.5 after diagnosis. No prior, coexistent, or subsequent adenocarcinoma either These findings indicate that can be adequately complete excision.