Case 38

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 46 year old woman presented with right 1.5 cm, smooth, ovoid, mobile breast mass.  An US-guided FNA was performed. Aspirated material was submitted for cytological evaluation.

What is the most likely diagnosis of this case?