Case 15

Authors: Manon Auger, M.D; McGill University, Montreal, Quebec, Canada, and Walid E. Khalbuss, M.D., Ph.D., University of Pittsburgh, Pittsburgh, PA, USA.

A 51 year old woman presented with a 2.5 cm heterogeneous thyroid nodule.  An US-guided FNA was performed.

What is the most likely diagnosis of this case?