retroperitoneum Week 688: Case 1 April 26, 2023 pathadmin 1. Presented by Dr. Pedram Argani and prepared by Dr. Robby Jones.This is a 63 year old male with a retroperitoneal mass.A. Hodgkin"s lymphoma B. Inflammatory liposarcomaC. Sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman disease)D. Sclerosing mesenteritis Loading...