Adenoid cystic carcinoma of breast: A rare case report

Adenoid cystic carcinoma of breast is rare, accounting for less than 4% of all breast malignancy. We are presenting a case of 57 Year old Hindu female patient who presented with chief complaint of right breast swelling since 5 years associated with pain.USG report showed well defined isoechoic to hypoechoic lesion without internal vascularity, with a possibility of fibroadenoma of right breast. FNAC of the lesion was also suggestive of fibroadenoma. The wide local excision was done, tissue specimen was sent for histopathological examination which was diagnosed as adenoid cystic carcinoma of right breast after immunohistochemical characterization. Immunochemistry markers show ER, PR HER 2: negative, P -63: Positive for myoepithelial cells, Ki 67: <10%, CD 117/ c kit: Positive for ductal cells.