Dianna Ng, MD1, Walid Khalbuss, MD, PhD2, Laura Tabatabai, MD1
1Department of Pathology, University of California-San Francisco, San Francisco, California
2Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
Clinical History: The patient is a 53 year old man who presents with a left sided 2.6 cm firm parotid mass. The mass had been present for 10 months and slowly enlarging. Six weeks ago he had a dental procedure on the same side and has been experiencing tenderness in the jaw since then. Fine needle aspiration sampling is performed.
What is your diagnosis?