cases, mediastinum Week 554: Case 2 April 26, 2023 pathadmin 1. Presented by Pedram Argani, M.D. and prepared by Nathan Cuka, M.D.This is a 3 year old male with a posterior mediastinal mass.Neuroblastoma, stroma rich, differentiatingNeuroblastoma, stroma poor, poorly differentiated, low MKINeuroblastoma, stroma poor, poorly differentiated, high MKINeuroblastoma, stroma poor, undifferentiated 1. Presented by Pedram Argani, M.D. and prepared by Nathan Cuka, M.D.This is a 3 year old male with a posterior mediastinal mass.