title: [Diagnosis and treatment of neonatal hydronephrosis. Influence of prenatal diagnosis].
abstract: OBJECTIVE
  The objective was to study hydronephrosis, the most common renal malformation during the neonatal period.
  
  
  METHODS
  We have studied 85 patients (119 renal units) with hydronephrosis. Prenatal and neonatal diagnosis were performed in 83% and 17%, respectively. Diagnosis was made by ultrasound, intravenous urography, voiding cystourethography and diuretic renogram.
  
  
  RESULTS
  The malformations were as follows: Ureteropelvic junction obstruction (UPJ; 40 cases), obstructive megaureter (OM; 16 cases), non-obstructive megaureter (NOM; 9 cases), multicystic kidney (MK; 8 cases), renoureteral duplication (RD; 8 cases) and posterior urethral valves (PUV; 4 cases). Surgical treatment was undergone in 39 cases (14 with UPJ, 10 with OM, 4 with NOM, 4 with MK, 3 with RD and 4 with PUV). Thirty-seven of these cases had prenatal diagnoses.
  
  
  CONCLUSIONS
  Conservative therapy was followed in 46 patients (26 with UPJ, 6 with OM, 5 with NOM, 4 with MK and 5 with RD). Thirty of these were prenatally diagnosed. Postnatal mean follow-up was 36 months, using diagnostic methods described previously. Seven cases died (1 from sepsis and 6 others from associated malformations) and 78 patients have good evolution after surgical and conservative treatments.
authors.affiliation: Servicio de Cirugía Pediátrica, Hospital Universitario San Carlos, Madrid.
authors.forename: M
authors.initials: M
authors.lastname: Armadá Maresca
authors.forename: F
authors.initials: F
authors.lastname: Rivilla Parra
authors.forename: E
authors.initials: E
authors.lastname: Viña Simón
authors.forename: J
authors.initials: J
authors.lastname: García Casillas
mesh_terms: D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis* / Q000628:therapy*; D007223:Infant; D007231:Infant, Newborn; D007668:Kidney / Q000002:abnormalities; D008297:Male; D007690:Polycystic Kidney Diseases / Q000209:etiology / Q000601:surgery; D014513:Ureter / Q000002:abnormalities; D014517:Ureteral Obstruction / Q000209:etiology / Q000601:surgery; D014521:Urethra / Q000002:abnormalities