J Korean Radiol Soc.
1990 Dec;26(6):1272-1278. 10.3348/jkrs.1990.26.6.1272.
Radiological findings of congenital urethral valves
- KMID: 2358789
- DOI: http://doi.org/10.3348/jkrs.1990.26.6.1272
Abstract
- Congenital Urethral Valve is the common cause of hydronephrosis in newborn infants and the most common causeof bladder outlet obstruction in male children. We reviewed and analysed radiological findings and associatedanomalies of 16 cases of congenital urethral valve which were exmained during the period from January 1985 toDecember 1989. The most frequent age was under one year old (56%). The main symptoms were urinary dribbling(37.5%), weak stream (25%) and urinary frequency & incontinence(25%). Anterior urethral valve (AUV) was 5 cases(31%) and posterior urethral (PUV) was 11 cases (69%), in which 10 cases were Type I and one case was Type III.Bladder wall thickening was seen in all cases and its severity was partly correlated with the degree ofvesicoureteral reflux(VUR). VUR was observed in 12 cases (75%), and relatively severe in older age group. Thedegree of VUR was milder in AUV than PUV . Hydronephrosis was more severe in PUV than in anterior one, and itsdegree was correlated with the seveirty of VUR. Associated anomalies were ectopic urethral opening(2 cases), PDA(1 case) and congenital megacolon(1 case) and patent urachus (1 case) in PUV. So early diagnosis and treatment ofcongenital urethral valve is essential to the prevention of renal damage.
