title: Analysis of bladder tumor recurrence in 178 patients.
abstract: The identification of bladder tumor characteristics which may affect tumor recurrence has been of interest to the clinician for a long time. Previous attempts to identify predictive factors of recurrence involved comparisons based on the twelve-month recurrence rate in a prospective clinical investigation of bladder tumor patients observed over a five-year period. A statistical regression model known as the proportional hazards model was employed to identify these factors using the disease-free interval as the outcome variable. Prior bladder cancer history, age at admission, initial tumor stage, grade, number, size, shape, and site were examined. The results confirm that a patient's prior history of bladder cancer must be considered in evaluating his likelihood of tumor recurrence. The analysis then focuses on patients with no prior history for predictive factors of recurrence.
mesh_terms: D000368:Aged; D006801:Humans; D008875:Middle Aged; D008962:Models, Theoretical; D009364:Neoplasm Recurrence, Local / Q000473:pathology*; D009367:Neoplasm Staging; D012306:Risk; D001749:Urinary Bladder Neoplasms / Q000473:pathology*