cases, large intestine Week 227: Case 2 April 26, 2023 pathadmin 1. Presented by Pedram Argani, M.D. and prepared by Dengfeng Cao, M.D. Ph.D.30 year old male with an abdominal mass.Malignant lymphoma, diffuse large cell typeGastrointestinal stromal tumor, epithelioid typeYolk sac tumorEpithelioid leiomyosarcoma 1. Presented by Pedram Argani, M.D. and prepared by Dengfeng Cao, M.D. Ph.D.30 year old male with an abdominal mass.