title: Postnatal outcome of prenatally diagnosed severe fetal renal pelvic dilatation.
abstract: OBJECTIVE
  We correlated the prenatal severity with the postnatal outcome of prenatally detected renal pelvic dilatation (RPD).
  
  
  METHODS
  Cases of prenatally detected RPD referred between January 2002 and December 2008 were included. Severe RPD was defined as an anterior-posterior diameter of 15 mm, mild and moderate dilatation was defined as 6 to <10 mm and 10 to <15 mm, respectively. Postnatal diagnosis, the need for surgery and the correlation with the prenatal severity was ascertained.
  
  
  RESULTS
  Of the 762 patients with RPD, 492 (64.5%) were mild, 167 (21.9%) were moderate, and 103 (13.5%) were severe. The male:female ratio for the severe cohort was 5:1. Of the sever cases, 68% had progressive dilatation. Of the mild/moderate cases, 5% progressed to severe dilatation. PUJ obstruction was confirmed in 48 cases (60.8%), severe VUR in 11 cases (14%), VUJ obstruction in 5 cases (6%), PUV in 2 cases (2.5%), and a nonidentifiable cause in 13 cases (16.5%). Ten of the 48 (20.8%) babies with PUJ obstruction required surgery within the first year of life.
  
  
  CONCLUSIONS
  An obstructive cause is usually present in severe cases, which are more likely to require surgery if there is PUJ obstruction. A high male:female ratio was present in this group.
authors.affiliation: Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College London, London, W12 0HS, UK. sailesh.Kumar@imperial.ac.uk
authors.forename: Sailesh
authors.initials: S
authors.lastname: Kumar
authors.forename: Shikha
authors.initials: S
authors.lastname: Walia
authors.forename: Obori
authors.initials: O
authors.lastname: Ikpeme
authors.forename: Eko
authors.initials: E
authors.lastname: Zhang
authors.forename: Gowrishankar
authors.initials: G
authors.lastname: Paramasivam
authors.forename: Sanjiv
authors.initials: S
authors.lastname: Agarwal
authors.forename: Karl
authors.initials: K
authors.lastname: Murphy
authors.forename: Jane
authors.initials: J
authors.lastname: Deal
authors.forename: Lorin
authors.initials: L
authors.lastname: Lakasing
mesh_terms: D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D004108:Dilatation, Pathologic / Q000175:diagnosis; D005260:Female; D005500:Follow-Up Studies; D005865:Gestational Age; D006801:Humans; D006869:Hydronephrosis / Q000150:complications / Q000151:congenital / Q000175:diagnosis; D007223:Infant; D007231:Infant, Newborn; D007682:Kidney Pelvis / Q000196:embryology* / Q000473:pathology* / Q000601:surgery; D008297:Male; D021782:Multicystic Dysplastic Kidney / Q000150:complications / Q000175:diagnosis; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011379:Prognosis; D012189:Retrospective Studies; D016216:Ultrasonography, Prenatal; D014517:Ureteral Obstruction / Q000150:complications / Q000175:diagnosis; D014718:Vesico-Ureteral Reflux / Q000150:complications / Q000175:diagnosis