1. Presented by Jonathan Epstein, M.D. and prepared by Sarah Karram, M.D.

A 75 year old man was noted to have a large retroperitoneal mass.

images/Karram/epstein_LEY_1.jpg
images/Karram/epstein_LEY_3.jpg
images/Karram/epstein_LEY_4.jpg
images/Karram/epstein_LEY_2.jpg
images/Karram/epstein_LEY_5.jpg