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?