Case 41

Authors: Isil Yildiz-Aktas, M.D. and Walid E. Khalbuss, M.D., Ph.D., University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.

Reviewed by: Rosemary H. Tambouret, M.D., Massachusetts General Hospital, Boston, MA, USA.

A 69 year old woman presented with firm 2 cm left breast mass in upper outer quadrant.  An US-guided FNA was performed. Aspirated material was submitted for cytological evaluation.

What is the most likely diagnosis of this case?