Presentation
G2P1 at 19 weeks gestation. Bilateral hydronephrosis for follow-up.
Patient Data
Age: 19 weeks gestation
Gender: Female
From the case:
Posterior urethral valves - antenatal
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Info

- both kidneys are enlarged with hydronephrosis
- hydroureters
- distended bladder with thickened wall
- distended posterior urethra with the keyhole sign
- moderate oligohydramnios
- male fetus
Case Discussion
The Ultrasound features in a male fetus are most consistent with posterior urethral valves.