title: Clinical and pathological features of children with Henoch-Schoenlein purpura nephritis: risk factors associated with poor prognosis.
abstract: OBJECTIVE
  To clarify the risk factors related to prognosis in patients with Henoch-Schoenlein purpura nephritis (HSPN), we investigated the cases with HSPN on long-term observation.
  
  
  METHODS
  We enrolled 114 patients who had been diagnosed with HSPN from 1974-1997. These patients were divided into 2 groups based upon features at last follow-up. One group, designated "favorable", consisted of 69 patients with normal urine and 25 patients with minor urinary abnormalities, and the second group, designated "unfavorable", consisted of 15 patients with active renal disease and 5 patients with renal failure. The clinical features, laboratory data and pathological findings were investigated in 2 groups.
  
  
  RESULTS
  Nephrotic syndrome, decreased factor XIII activity, hypertension and renal failure at onset were more frequent in "unfavorable" than in "favorable". The rate of glomeruli with crescents, macrophage infiltrations, tubulointerstitial changes and acute exacerbation in "unfavorable" were higher than those in "favorable". There were 5 cases with renal insufficiency, and renal survival rate was 95.6% for over 15 years.
  
  
  CONCLUSIONS
  These results suggest that the above mentioned risk factors play an important role in prognosis of the patients with active renal disease and renal failure.
authors.affiliation: Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan. tomo@fmu.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kawasaki
authors.forename: J
authors.initials: J
authors.lastname: Suzuki
authors.forename: N
authors.initials: N
authors.lastname: Sakai
authors.forename: K
authors.initials: K
authors.lastname: Nemoto
authors.forename: R
authors.initials: R
authors.lastname: Nozawa
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: H
authors.initials: H
authors.lastname: Suzuki
mesh_terms: D001706:Biopsy; D002908:Chronic Disease; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000150:complications* / Q000473:pathology; D007223:Infant; D016015:Logistic Models; D008297:Male; D009393:Nephritis / Q000209:etiology* / Q000473:pathology; D011379:Prognosis; D012307:Risk Factors; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric