External Validation Of Risk Models Predicting Outcomes In Non-Muscle Invasive Bladder Urothelial Carcinoma Patient After Transurethral Tumor Resection: A Single-Institute Experience In Taiwan.

INTRODUCTION AND OBJECTIVES:Risk stratification with different models in bladder cancer have been introduced for prognosis prediction, including European Organization for Research and Treatment of Cancer (EORTC) risk tables, and Spanish Urological Club for Oncological Treatment (CUETO) scoring model. However, they use 1973 WHO classification, having different treatment such as BCG therapy, and were developed based on western population. We aim to evaluate the accuracy of these models with our single medical center database in Taiwan.METHODS:From 2007 to 2015, 1613 patients with pathology report of non-muscle invasive bladder urothelial carcinoma (UC) were enrolled. Patients with history of primary (pure) CIS, muscle invasive or upper tract UC were excluded. The definition of recurrence was reappearance of UC in the bladder, and progression was advancing in stage, metastasis or death caused by UC. EORTC and CUETO score have been calculated for each patient, then assigned into 4 groups. Regression model wer...