Antenatal diagnosis of Potter syndrome.

A case is presented of bilateral renal agenesis (Potter syndrome) which was diagnosed before birth. The diagnosis was based on severe oligohydramnios, unrecognizable fetal kidneys and bladder on ultrasound, and failure to demonstrate a fetal bladder after administration of furosemide. Ultrasonic evidence of a hypoplastic thoracic cage provided further support for the intrauterine diagnosis.