Effect of Nonurothelial Histologic Variants on the Outcomes of Radical Cystectomy for Nonmetastatic Muscle-invasive Urinary Bladder Cancer

Pure squamous cell and neuroendocrine carcinoma histologic types were associated with worse OS relative to PUC. However, no difference was found between adenocarcinoma and PUC. All histologic variants were associated with higher tumor stage at surgery compared with PUC.