What complication could arise if a urethral stricture is not treated?

Kidney failure can occur if a urethral stricture is left untreated due to the obstruction of urine flow. When urine is unable to pass through the urethra due to a stricture, it can lead to increased pressure in the urinary tract, causing the kidneys to be unable to filter waste effectively. Over time, this pressure can lead to hydronephrosis, which is the swelling of the kidney due to a build-up of urine, ultimately impairing kidney function. If the obstruction persists, it can potentially result in irreversible kidney damage and failure.

While urinary incontinence, bladder stone formation, and increased risk of infections can also be complications associated with urethral strictures, the progression to kidney failure represents the most serious and life-threatening outcome if the condition is not addressed. Recognizing the importance of timely intervention for a urethral stricture is crucial to preserving kidney function and overall urinary health.