Posterior urethral valve - antenatal ultrasound

Case contributed by Dr Maulik S Patel


2nd gravida for anomaly scan. 20 weeks of amenorrhea.

Patient Data

Age: 25 yrs
Gender: Female

There is a singleton intrauterine pregnancy with maturity concordant with gestational age. There is mild oligohydramnios (without history of leaking). 

Fetal urinary bladder is over-distended (35 cc volume). It shows mural trabeculations. There is bilateral hydronephrosis. There is no peri-nephric collection/urinoma. Neither ureter could be traced.

There is another finding of peri-cardial effusion.

Rest of fetal anatomical survey is normal (not uploaded).

Case Discussion

Asymptomatic 2nd gravida patient presents for 20-week anomaly scan. There is mild oligohydramnios. There is the presence of a keyhole sign favoring posterior urethral valve.

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Case information

rID: 53772
Published: 6th Jun 2017
Last edited: 31st Dec 2019
Inclusion in quiz mode: Included