Posterior urethral valve

Case contributed by Henry Knipe


Antenatal hydronephrosis.

Patient Data

Age: 2 weeks
Gender: Male



On the preliminary images there are two small calcifications projecting over the left renal shadow. The bladder is enlarged and trabeculated. The posterior urethra is markedly dilated with a possible shelf seen at the transition to non-dilated anterior urethra. No vesicoureteric reflux was seen. 

Case Discussion

These findings are consistent with posterior urethral valve (a.k.a. posterior obstructive congenital urethral membrane - POCUM). 

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