cases, kidney Week 558: Case 1 April 26, 2023 pathadmin 1. Presented by Jonathan Epstein, M.D. and prepared by Nathan Cuka, M.D.A 43 year old male underwent a partial nephrectomy for a renal mass.Anastomosing hemangiomaAngiosarcomaUsual hemangioma 1. Presented by Jonathan Epstein, M.D. and prepared by Nathan Cuka, M.D.A 43 year old male underwent a partial nephrectomy for a renal mass.