posterior urethral valves
Congenital obstructive tissue folds in the male urethra causing urinary obstruction.
Full Definition
Posterior urethral valves (PUV) are abnormal tissue folds located in the posterior urethra of male infants that cause varying degrees of urinary obstruction. This condition is the most common cause of severe congenital urinary obstruction in boys, occurring in approximately 1 in 5,000-8,000 male births. The obstruction can lead to bladder dysfunction, vesicoureteral reflux, and progressive kidney damage if not promptly treated. PUV are classified into types I, II, and III, with type I being most common and clinically significant. Diagnosis is typically made through VCUG, and treatment involves endoscopic valve ablation. Early intervention is crucial to preserve kidney function and prevent long-term complications including chronic kidney disease.
Usage
Usage note: Can be abbreviated as PUV after first use. Always plural form.
In Context
- "Prenatal ultrasound suggested posterior urethral valves based on oligohydramnios and dilated fetal bladder." — Prenatal consultation
- "Endoscopic ablation of posterior urethral valves was performed successfully in the newborn period." — Operative report