Granular cell tumor of the breast: an uncommon lesion that mimics carcinoma.

Granular cell tumors (granular cell rnyoblastoma) are neoplasms Which pursue a benign clinical course in large majority of cases. Tongue is the classic location for this tumor, however, rarely it is seen ill many other sites. Cases of granular cell tumor have been described in both male and female breasts The recognition of this entity in breast is important because it mimics breast carcinoma clinically, radiologically and on macroscopic examination. We present a case of granular cell tumor presenting as breast mass in a young female. The aim of presenting this case is to emphasize the importance of identifying this rare neoplasm in the breast which closely simulates breast carcinoma and may result in inappropriate radical surgery. Moreover, especially in the present era in which fine needle aspiration cytology and intraoperative frozen section are the frequently used diagnostic modalities, a preoperative or intraoperative diagnosis of the lesion will help to plan limited surgery.