... and Methods: We performed a retrospective analysis of 195 patients diagnosed with UTUC, who were divided into a diagnostic URS group (URS+) and a nondiagnostic URS group (URS–) according to whether diagnostic ureteroscopic biopsy was performed. A Cox regression model was used to analyse the risk factors...

... sensitivity in cases of low-grade TCC [ 7,8 ]. Keeley et al. [ 8 ] performed combined upper urinary tract lavage, multiple ureteroscopic biopsies and cell block cytopathological analysis to make the diagnosis of urothelial carcinoma in 94% of cases. They also stated that biopsies were obtained using a forceps...