Nov 12, 2025 · Posterior urethral valves (PUV), also referred to as congenital obstructing posterior urethral membranes (COPUM), are the most common congenital obstructive lesion of the urethra …

Children with posterior urethral valves usually present with repeated urinary tract infections and dysuria. Voiding cystourethrogram is most commonly used investigation for diagnosis shows signs of dilated …

Oct 9, 2023 · The keyhole sign is an ultrasonographic sign seen in boys with posterior urethral valves. It refers to the appearance of the proximal urethra (which is dilated) and an associated thick walled …

Ultrasound demonstrates a markedly distended bladder and prostatic urethra (keyhole sign) with a degree of prominence of the renal collecting systems. Features are consistent with posterior urethral …

Additionally, there is a noted reduction in amniotic fluid, with no measurable pool noted (anhydramnios), which is typically associated with the presence of posterior urethral valves.

Perineal view of the urethra shows grossly dilated posterior urethra with a valve noted in the distal posterior urethra.

Micturating cystourethrogram shows dilatation of the prostatic portion of the urethra, in keeping with posterior urethral valves.

The features are most consistent with posterior urethral valves. Posterior urethra valves is a congenital anomaly where abnormal mucosal folds obstruct the posterior urethra, leading to urinary tract …

Posterior urethral valves (PUV) is a congenital abnormality that is characterized by membranous folds found in the lumen of the posterior urethra and lead to bladder outlet obstruction.

Fetal urinary bladder showed thickened trabeculated wall and dilated posterior urethra. Based on these findings a diagnosis of posterior urethral valves was given.