Tara Saunders, 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: A 58 year old woman with a history of breast cancer presented with a 3 cm parotid mass. No additional clinical data, radiological imaging or pathology was available for review. The mass was sampled by fine needle aspiration.
What is your diagnosis?