Case 49
Natasha Kim Berg, MD. Cytopathology Fellow, McGaw Medical Center, Northwestern University, Chicago, USA

Reviewer: Ajit Singh Paintal, MD. Assistant Professor of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, USA.

The patient is a 62 year old male with bilateral renal masses. A CT guided FNA of the right superior renal mass was performed. Images of a Diff Quik stained smear and an H&E stained cell block are provided.

What is your diagnosis?