Document Detail

The association of isolated mild fetal hydronephrosis with postnatal vesicoureteral reflux.
MedLine Citation:
PMID:  12530618     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: We evaluated the incidence of vesicoureteral reflux in fetuses with prenatally detected isolated mild fetal hydronephrosis. METHODS: Fetuses with isolated mild fetal hydronephrosis (defined as a fetal renal pelvis anteroposterior diameter of > or = 4 and < 10 mm before 24 weeks' gestational age) were prospectively evaluated with postnatal renal ultrasound and voiding cystourethrography within the first few weeks after delivery. Infants were evaluated regardless of whether or not renal pelvic dilatation was seen on postnatal ultrasound examination. RESULTS: Forty cases of mild fetal hydronephrosis were identified from the 5,432 patients cared for at our institution from February 1996 to December 1998 (overall incidence: 1/136). Cases involving aneuploidy (n = 1) and inadequate follow-up (n = 5) were excluded from the investigation. One fetus with documented mild hydronephrosis early in gestation had spontaneous resolution and did not undergo postnatal evaluation. Of the remaining 33 infants, 32 underwent postnatal renal ultrasound examination and all had voiding cystourethrography. Vesicoureteral reflux was identified in five (15%) of the neonates. Eighty per cent (four out of five) of these infants were male. Resolution of vesicoureteral reflux occurred in 75% (three out of four) of the infants available for follow-up within 2 years of birth. CONCLUSIONS: Isolated mild fetal hydronephrosis is associated with vesicoureteral reflux on postnatal voiding cystourethrography.
J M Gloor; P S Ramsey; P L Ogburn; D R Danilenko-Dixon; C S DiMarco; K D Ramin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  12     ISSN:  1476-7058     ISO Abbreviation:  J. Matern. Fetal. Neonatal. Med.     Publication Date:  2002 Sep 
Date Detail:
Created Date:  2003-01-17     Completed Date:  2003-02-10     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  196-200     Citation Subset:  IM    
Division of Nephrology and Internal Medicine, Mayo Medical Center, Rochester, Minnesota, USA.
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MeSH Terms
Fetal Diseases / ultrasonography*
Gestational Age
Hydronephrosis / complications*,  ultrasonography
Infant, Newborn
Kidney / ultrasonography
Prospective Studies
Ultrasonography, Prenatal
Vesico-Ureteral Reflux / diagnosis,  etiology*,  ultrasonography

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