Prognostic value of prior history of urothelial carcinoma of the bladder in patients with upper urinary tract urothelial carcinoma: results from a retrospective multicenter study.

Background Patients with urothelial carcinoma (UC) often develop multifocal metachronous tumors throughout the genitourinary tract. In the present study, we evaluated the prognostic value of prior history of UC of the bladder (UCB) in patients with upper tract urothelial carcinoma (UTUC) in an international multi-institutional cohort.