bladder, cases Week 310: Case 6 April 26, 2023 pathadmin 1. Presented by George Netto, M.D. and prepared by Zarir E. Karanjawala, M.D., Ph.D.A 56 year-old male was found to have a 3 cm urinary bladder mass on a follow-up endoscopy performed 6 months after a diagnosis of a papillary urothelial neoplasm of low malignant potential (PUNLMP).Sarcomatoid carcinoma (Carcinosarcoma)LeiomyosarcomaInflammatory myofibroblastic tumor (IMT)Spindle cell rhabdomyosarcoma 1. Presented by George Netto, M.D. and prepared by Zarir E. Karanjawala, M.D., Ph.D.A 56 year-old male was found to have a 3 cm urinary bladder mass on a follow-up endoscopy performed 6 months after a diagnosis of a papillary urothelial neoplasm of low malignant potential (PUNLMP).