Week 22: Case 4

1. Presented by John Yardley, M.D. and Michael Torbenson, M.D. and prepared by Angelique W. Levi, M.D.

A 17-year-old male presented with abdominal pain and distension. An endoscopic examination of the upper GI tract was unremarkable and a single biopsy from the 3rd portion of the duodenum was obtained.