Objective: To evaluate programmed death ligand 1 (PD-L1) staining fidelity between the primary tumor and associated lymph node metastases in bladder cancer. To secondarily evaluate whether neoadjuvant chemotherapy (NAC) affects this relationship.
Methods: Sixty-seven subjects with residual bladder cancer on cystectomy and associated positive lymph nodes were identified between 2008 and 2015.