An urothelial carcinoma that arises from the urothelial lining of the prostatic ducts or the prostatic urethra. The disease is primary prostate urothelial carcinoma (MONDO_0002834, a Monarch Disease Ontology identifier). Also known as: primary prostate urothelial cancer, prostate gland transitional cell carcinoma, prostate transitional cell carcinoma, prostate urothelial carcinoma, transitional cell carcinoma of prostate, transitional cell carcinoma of the prostate.