Hydramnios and maternal renal failure: relief with fetal therapy

Hydramnios and maternal renal compromise are described in a singleton pregnancy with a large fetal abdominal cystic mass. Both the hydramnios and the renal failure resolved after percutaneous drainage of the fetal cyst. Rapid reaccumulation of the mass resulted in redrainage and placement of an indwelling cyst/amniotic cavity diversion shunt. Successful continuous decompression and uneventful continuation of the pregnancy were observed for four weeks. The relationship between fetal abdominal masses and hydramnios is discussed.