title: Features of IgA nephropathy in preschool children.
abstract: OBJECTIVE
  The aim of this study is to clarify the age-related characteristics of pediatric IgA nephropathy.
  
  
  METHODS
  Five cases in preschool children less than 6 years old were analyzed and compared to 38 cases in older children from 6 to 15 years old.
  
  
  RESULTS
  The group of younger children had higher incidences of gross hematuria, hypertension, proteinuria, and hypoproteinemia. Renal biopsy specimens in this group showed more intracapillary lesions including mesangial cell proliferation and endocapillary proliferation ofglomeruli, but less segmental lesions, global sclerosis, and interstitial changes.
  
  
  CONCLUSIONS
  IgA nephritis in preschool children demonstrated more symptoms of acute onset and less chronic renal injury.
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Tottori University, Yonago, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Utsunomiya
authors.forename: T
authors.initials: T
authors.lastname: Kado
authors.forename: T
authors.initials: T
authors.lastname: Koda
authors.forename: S
authors.initials: S
authors.lastname: Okada
authors.forename: A
authors.initials: A
authors.lastname: Hayashi
authors.forename: A
authors.initials: A
authors.lastname: Fukawaza
authors.forename: T
authors.initials: T
authors.lastname: Nakagawa
authors.forename: S
authors.initials: S
authors.lastname: Kanzaki
authors.forename: T
authors.initials: T
authors.lastname: Kasagi
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001706:Biopsy; D002648:Child; D002675:Child, Preschool; D005260:Female; D005922:Glomerulonephritis, IGA / Q000150:complications* / Q000473:pathology / Q000503:physiopathology; D006417:Hematuria / Q000209:etiology; D006801:Humans; D006973:Hypertension / Q000209:etiology; D007019:Hypoproteinemia / Q000209:etiology; D007668:Kidney / Q000473:pathology*; D008297:Male; D011379:Prognosis; D011507:Proteinuria / Q000209:etiology