A brief review of the literature on the malignant ureteral obstruction

Malignant ureteral obstruction (MUO), whether caused by a primary urological tumor or secondary to a late-stage malignancy, posed significant management challenges for urologists due to limited clinical data. Each case required individual assessment, as the absence of specific treatments could severely impact renal function and patient life expectancy. The primary goal was to promptly restore renal function, but even after addressing the obstruction, managing life-threatening post-obstructive diuresis was crucial.