Does Bladder Outlet Obstruction Releated to Recurrence In Low Risk Ta Low Grade Non Muscle Invasive Bladder Cancer?

Introduction

Bladder cancer is common in men. The number of recurrences is one of the risk factors for progression and poor prognosis in nonmuscle invasive bladder cancer (NMIBC). We aimed to investigate whether bladder outlet obstruction (BOO) has an effect on bladder cancer recurrence in patients with nonmuscle invasive bladder cancer.

Materials and methods

Data from 207 male patients with nonmuscle invasive bladder cancer (NMIBC) diagnosed between November 2008 and March 2023, with low risk Ta Low-Grade tumors were retrospectively reviewed. Patients were divided into 2 groups as bladder outlet obstruction (n:133) and nonobstruction (n:74). We analyzed the results of the effect of obstruction on bladder cancer recurrence.

Results

Recurrence rates of patients with bladder outlet obstruction were found to be higher in Kaplan-Meier analysis. The log-rank test result of P = .034 was statistically significant at 5% significance level. Cox regression analysis revealed that bladder outlet obstruction had an increasing effect on recurrence (P = .049), while other variables (smoking, age, postmicturition residual [PMR]) did not create a significant difference in the risk of recurrence.

Conclusion

The presence of bladder outlet obstruction is a factor that increases the risk of recurrence. In bladder cancer patients, early treatment of bladder outlet obstruction will not only reduce the tumor recurrence rate but also have a positive impact on the patient's quality of life.