urethral valves

u·re·thral valves

folds in the urethral mucous membrane.
See also: anterior urethral valve, posterior urethral valves.
References in periodicals archive ?
Barney has a condition called posterior urethral valves, which means his kidneys do not work properly.
Posterior Urethral Valves (PUV) is the most common structural cause of urinary outflow obstruction in paediatric practice.
Posterior urethral valves (PUV) are the commonest congenital obstruction of the lower urinary tract.
Predisposing factors such as hypotonia as seen in Down syndrome, connective tissue disorders as in Ehlers-Danlos syndrome, or structural malformations such as posterior urethral valves should alert urologists to take special precautions with these patients because they may be at a higher risk of iatrogenic injury.
1) We believe this can be correlated to both the long-term bladder deterioration seen in spinal dysraphism and posterior urethral valves.
Etiologically 44 patients had physiologichydronephrosis 11 pelvi-ureteric junction obstruction 5 vesicouretric reflux and 4 posterior urethral valves.
Moderate and severe cases with diameters greater than 15 mm (grades 3 and 4) are often associated with ureteropelvic junction obstruction, posterior urethral valves, and vesicoureteral reflux (VUR); mild cases (grades 1 and 2) mostly resolve spontaneously (7).
posterior urethral valves, UPJ obstruction, obstructive ureteroceles, or ureteral atresia or obstruction).
The most commonly diagnosed CAKUT include a multicystic dysplastic kidney (MCDK), vesico-ureteric reflux (VUR) and obstructive uropathy due to posterior urethral valves (PUV) or pelvoureteric junction obstruction (PUJO).
Figure 4 illustrates the case of a 5-year-old with undiagnosed posterior urethral valves and significant upper urinary tract distress, ultimately resulting in renal failure.
Posterior urethral valves (PUV) disorder is the most common cause of this condition in male fetuses (2).
5% of our patients had posterior urethral valves and expectedly all were males.