cases, kidney Week 440: Case 2 April 26, 2023 pathadmin 1. Presented by Jonathan Epstein, M.D. and prepared by Hillary Ross, M.D.A 66 year old female was noted to have a large mass in the kidney on imaging studies. A nephrectomy was performed. AngiomyolipomaSarcomatoid renal cell carcinomaLeiomyosarcomaPEComa 1. Presented by Jonathan Epstein, M.D. and prepared by Hillary Ross, M.D.A 66 year old female was noted to have a large mass in the kidney on imaging studies. A nephrectomy was performed.