Case 45

Vijay George, 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 78 year old man presents with a unilateral 2.9 cm parotid gland mass.  A fine needle aspiration (FNA) was performed for cytological analysis.

What is your diagnosis?