cases, large intestine Week 491: Case 4 April 26, 2023 pathadmin 1. Presented by Ralph Hruban, M.D. and prepared by Matthew Karafin, M.D.This patient presented with signs and symptoms of duodenal obstruction. A large duodenal mass was found and resected.images/1alex/0801case4image1.jpgimages/1alex/0801case4image2.jpgimages/1alex/0801case4image3.jpgPoorly-differentiated neuroendocrine carcinomaLarge cell lymphomaMedullary carcinomaLymphoepithelioma-like carcinoma Loading...