A microglandular adenosis-like lesion simulating tubular adenocarcinoma of the breast. A case report with cytological and histological appearances.

Although rare, microglandular adenosis of the breast is well recognized as a benign lesion which mimics tubular adenocarcinoma. In this paper we present a case of a complex microglandular adenosis-like lesion which was thought to be suggestive of tubular adenocarcinoma by fine needle aspiration cytology. The problem of the cytological distinction of microglandular adenosis from tubular adenocarcinoma is discussed.