Case 25
Authors: Cecilia Gimenez, M.D1., Mohamed Aziz, M.D.1 and Walid E. Khalbuss, M.D., Ph.D.2
1North Shore – Long Island Jewish Health System, Department of Pathology, Lake Success, New York & 2University of Pittsburgh Medical Center (UPMC); Pittsburgh, PA 15090.
Reviewer: Dr Laura Tabatabai, Assistant Professor of Pathology, University of California San Francisco, USA
A 37 year old male presented with an oval hypoechoic mass in the body of the pancreas measuring 3×3 cm. The mass was sampled by endoscopic ultrasound-guided fine needle aspiration (EUS-FNA). 5 static images (3 Pap stain, 1 H&E and 1 IHC stained slide) are provided.
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| Fig 1 Pap stain x 100 | Fig 2 Pap stain x 300 |
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| Fig 3 Pap stain x400 | Fig 4 H&E stain, cell block x400 |
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Fig 5 Trypsin immunostain, x400 |
What is your diagnosis?