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      The significance of tubulointerstitial lesions in childhood Henoch–Schönlein nephritis

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          Abstract

          Little information is currently available on the development of tubulointerstitial lesions in children with Henoch-Schönlein nephritis (HSN). To identify the impact of the development of tubulointerstitial changes in HSN, we retrospectively analyzed renal biopsies obtained from children with HSN.

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          Most cited references23

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          The adult kidney 24 years after childhood Henoch-Schönlein purpura: a retrospective cohort study.

          Henoch-Schönlein purpura arising in childhood could cause renal impairment or even an end-stage renal disease later in life. We aimed to assess long-term outcome of childhood Henoch-Schönlein purpura after 24 years. We studied a cohort of 26 boys and 26 girls who were treated for Henoch-Schönlein purpura at Helsinki University Hospital during 1964-83. Mean follow-up was 24.1 years (SD 6.0; 16.4-36.5). All participants were asked about their state of health in a questionnaire, and 47 (90%) were examined by a doctor. Patients' medical history data were obtained from health-care centres and regional hospitals. Seven (35%) of 20 adults who had severe Henoch-Schönlein purpura and glomerulonephritis at onset had renal impairment as adults, compared with two (7%) of 27 with mild or no renal symptoms at onset (relative risk 4.7, 95% CI 1.3-18.7). Relative risk for a poor outcome was 5.0 in women (1.1-32.5) and 2.0 in men (0.2-17.5). All patients with no renal symptoms at onset had a good outcome after 24 years of follow-up. Severity of first kidney biopsy finding did not correlate with risk of a poor outcome. 16 (70%) of 23 pregnancies had been complicated by hypertension, proteinuria, or both. Five (56%) of the nine women with complicated pregnancies had a poor renal outcome. Long-term follow-up of all patients who had Henoch-Schönlein purpura with severe renal symptoms at onset is needed during adulthood. All women who had even mild renal symptoms at onset of Henoch-Schönlein purpura should be carefully observed during and after pregnancy.
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            Prognosis of Henoch-Schönlein nephritis in children.

            All the survivors of a series of 88 patients with Henoch-Schönlein nephritis were examined after a follow-up of six and a half to 21 years (mean 9-9). Sixty-one patients had no demonstrable abnormality; six had minor urinary abnormalities; five had hypertension without urinary abnormally or renal dysfunction; four had heavy proteinuria; eight were in chronic renal failure, three of whom were on regular dialysis; and four patients had died within 25 months of onset. Neither corticosteroids nor immunosuppressive drugs alone or in combination appeared to influence the outcome. A clinical presentation with a combination of acute nephritis and a nephrotic syndrome and a high proportion of crescents in renal biopsy specimens was associated with a poor outcome. Neither the clinical presentation nor the renal morphology were, however, precise determinants of outcome. Outcome was not related to age, associated streptococcal infection, or recurrences of the rash. The clinical state two years after presentation was compared with the state six and a half years or more after presentation in 76 patients. The clinical state had changed in 32 patients, in 17 of whom it had deteriorated. It was not possible to identify with any certainty the patients who would deteriorate (or improve). Patients who have had Henoch-Schönlein nephritis should be followed up for at least five years.
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              Long-term follow-up of childhood Henoch-Schönlein nephritis.

              A study of long-term outcome of 78 subjects who had had Henoch-Schönlein nephritis during childhood (at a mean of 23.4 years after onset) shows that severity of clinical presentation and initial findings on renal biopsy correlate well with outcome but have poor predictive value in individuals. 44% of patients who had nephritic, nephrotic, or nephritic/nephrotic syndromes at onset have hypertension or impaired renal function, whereas 82% of those who presented with haematuria (with or without proteinuria) are normal. 17 patients deteriorated clinically from an initial assessment in 1971; 7 of these had apparently completely recovered in 1976. 16 of 44 full-term pregnancies were complicated by proteinuria and/or hypertension, even in the absence of active renal disease. These findings indicate that childhood Henoch-Schönlein nephritis requires long-term follow-up, especially during pregnancy.
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                Author and article information

                Journal
                Pediatric Nephrology
                Pediatr Nephrol
                Springer Nature
                0931-041X
                1432-198X
                November 2016
                May 27 2016
                November 2016
                : 31
                : 11
                : 2087-2093
                Article
                10.1007/s00467-016-3417-2
                27234910
                28e75fc0-466c-459f-b749-cbc49cd3271d
                © 2016

                http://www.springer.com/tdm

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