The aim of this work is to evaluate the immunohistochemical expression of PD-L1 in tumor cells of urothelial bladder carcinoma.PD-L1 immunoexpression was assessed on 20 cases of radical cystectomy specimens using monoclonal rabbit anti-PD-L1 antibody.Extent of membranous PD-L1 expression was assigned in each case.Tumor cells showing > 5% expression were considered positive.PD-L1 was seen in 6 (30%...