Lipid-secreting carcinoma is a rare type of invasive carcinoma of the
breast first described by Aboumrad et al in 1963. We believe lipid-sec
reting carcinoma to be a specific type of breast carcinoma and that it
has to be differentiated from invasive lobular carcinoma. We report f
or the first time the fine needle aspiration cytologic features along
with the histologic and electron microscopic findings.