Bilateral angiosarcoma breast diagnosed by fine needle aspiration cytology.

Concurrent or synchronous angiosarcoma (AS) of breast is a rarity. Specific recognition of this neoplasm in cytological specimens is difficult and conclusive diagnosis in the absence of ancillary methods is achieved only uncommonly. Herein, we present a case of bilateral AS of breasts in a 32-year-old lady diagnosed by fine needle aspiration (FNA) cytology, thus enabling a definitive surgical approach. This case report emphasizes that when aspiration smears show vasoformative features consisting of microacini, arborizing microtissue fragments and intracytoplasmic lumen against a bloody background, diagnosis can be made conclusively by FNA with immunohistochemical confirmation.