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Correlation of prenatal renal pelvic anteroposterior diameter with outcome in infancy
A Stocks1, D Richards, B Frentzen
1Department of Pediatrics (Division of Pediatric Nephrology), University of Florida College of Medicine, Gainesville, USA.
Purpose:
We attempted to correlate prenatal renal pelvic anteroposterior diameter with outcome in infancy.
Material And Methods:
Between May 1992 and March 1994 we identified 27 cases of fetal hydronephrosis in which renal pelvic anteroposterior diameter was 4 mm. or greater before 33 weeks of gestation and 7 mm. or greater at or after 33 weeks of gestation.
Results:
Hydronephrosis was bilateral in 18 fetuses and unilateral in 9. Shortly after birth radiological assessment revealed vesicoureteral reflux in 6 neonates, ureteropelvic junction obstruction in 6, extrarenal pelves in 3 and persistent nonobstructive hydronephrosis in 4. Radiological evaluation was normal in 8 newborns.
Conclusions:
When these screening criteria for hydronephrosis are met prenatally a complete radiological assessment should be done following birth.