Case 42

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 53 year old woman with a history of lung carcinoma presented with right upper inner quadrant firm breast mass.  An US-guided FNA was performed. Aspirated material was submitted for cytological evaluation.

What is the most likely diagnosis of this case?