One-year follow-up results of infants with antenatal hydronephrosis

Abstract

Objection: Our purpose is to present the results of the one year- follow up of infants who were diagnosed with antenatal hydronephrosis. Methods: Infants (0-24 months) with diagnosis of antenatal hydronephrosis who were brought into pediatric nephrology outpatient clinics of our hospital were followed up according to the Turkish Pediatric Nephrology Society CAKUT (Congenital Anomalies of Kidney and Urinary Tract) Guidelines. Results: Ninety-three infants (64 males, 0.83 years, range 0.1-2.1 years) previously diagnosed as antenatal hydronephrosis received diagnosis of healthy infant (n=5; 5,4 %) mild (n=70; 75,3%), moderate (n=14; 15,1%), and severe (n=4; 4,3%) hydronephrosis. Voiding cystourethrogram (VCUG) was performed in 10 (10,7%) patients, 2 of them had unilateral grade 4 vesicoureteral reflux (VUR). MAG3 scan was performed in 8 (8,6%) patients, two of them had ureteropelvic junction obstruction, one of these patients had undergone pyeloplasty. After one year follow-up of 88 infants, 47 (53,4%) patients had normal, 23 (26.1%) patients had mild, 11 (12,5%) patients had moderate and 7 (8%) patients had severe hydronephrosis. Three cases (3,4%) progressed from moderate to severe disease. Conclusion: The most frequent cause of antenatal hydronephrosis among our patients was transient antenatal hydronephrosis. However follow-up of cases with a tendency to progress is important.