Is kidney biopsy necessary in children with idiopathic nephrotic syndrome?

Author:

Bekassy Zivile12ORCID,Lindström Martin3,Rosenblad Therese12,Aradóttir Sunna1,Sartz Lisa12,Tullus Kjell45ORCID

Affiliation:

1. Department of Pediatrics, Clinical Sciences Lund Lund University Lund Sweden

2. Section for Paediatric Nephrology Skåne University Hospital Lund Sweden

3. Department of Clinical Sciences, Division of Pathology Lund University Lund Sweden

4. Paediatric Nephrology Great Ormond Street Hospital for Children London UK

5. Division of Paediatrics, Department of Clinical Science, Intervention and Technology Karolinska Institutet and Karolinska University Hospital Stockholm Sweden

Abstract

AbstractAimTo investigate the need, in the Northern European setting, to perform kidney biopsy in children with steroid‐sensitive nephrotic syndrome.MethodsIn this retrospective study 124 individuals aged 1–18 years with idiopathic nephrotic syndrome, followed in the paediatric hospitals in southern Sweden from 1999 to 2018, were included.ResultsThere was a median follow‐up time of 6.5 (0.2–16.8) years. The majority (92%) of children were steroid‐sensitive and of them, 60.5% were frequently relapsing or steroid‐dependent. Microscopic haematuria was found at onset in 81.1% and hypertension in 8.7%. At least one kidney biopsy was performed in 93 (75%). The most common indication was a steroid‐dependent or relapsing course (58.4%). One of 79 steroid‐sensitive children had another histological diagnosis than minimal change nephropathy 1.3%, 95% confidence interval (0.002, 0.068). Bleeding occurred after eight biopsies (6.6%). Twenty individuals (30.7%) were transferred to adult units, 18 still on immunosuppression.ConclusionWe have in our cohort of unselected children with idiopathic nephrotic syndrome confirmed that a kidney biopsy rarely gives important medical information in steroid‐sensitive children without any other complicating factor and that the liberal policy of kidney biopsy in the Nordic countries safely can be changed.

Publisher

Wiley

Subject

General Medicine,Pediatrics, Perinatology and Child Health

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