Histological and clinical findings in patients with post-transplantation and classical encapsulating peritoneal sclerosis: a European multicenter study

PLoS One. 2014 Aug 29;9(8):e106511. doi: 10.1371/journal.pone.0106511. eCollection 2014.

Abstract

Background: Encapsulating peritoneal sclerosis (EPS) commonly presents after peritoneal dialysis has been stopped, either post-transplantation (PT-EPS) or after switching to hemodialysis (classical EPS, cEPS). The aim of the present study was to investigate whether PT-EPS and cEPS differ in morphology and clinical course.

Methods: In this European multicenter study we included fifty-six EPS patients, retrospectively paired-matched for peritoneal dialysis (PD) duration. Twenty-eight patients developed EPS after renal transplantation, whereas the other twenty-eight patients were classical EPS patients. Demographic data, PD details, and course of disease were documented. Peritoneal biopsies of all patients were investigated using histological criteria.

Results: Eighteen patients from the Netherlands and thirty-eight patients from Germany were included. Time on PD was 78(64-95) in the PT-EPS and 72(50-89) months in the cEPS group (p>0.05). There were no significant differences between the morphological findings of cEPS and PT-EPS. Podoplanin positive cells were a prominent feature in both groups, but with a similar distribution of the podoplanin patterns. Time between cessation of PD to the clinical diagnosis of EPS was significantly shorter in the PT-EPS group as compared to cEPS (4(2-9) months versus 23(7-24) months, p<0.001). Peritonitis rate was significantly higher in cEPS.

Conclusions: In peritoneal biopsies PT-EPS and cEPS are not distinguishable by histomorphology and immunohistochemistry, which argues against different entities. The critical phase for PT-EPS is during the first year after transplantation and therefore earlier after PD cessation then in cEPS.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Europe
  • Female
  • Germany
  • Humans
  • Kidney Transplantation / adverse effects
  • Male
  • Membrane Glycoproteins / metabolism
  • Middle Aged
  • Netherlands
  • Peritoneal Fibrosis / epidemiology*
  • Peritoneal Fibrosis / etiology*
  • Peritoneal Fibrosis / pathology
  • Renal Dialysis / adverse effects*
  • Renal Dialysis / classification
  • Retrospective Studies

Substances

  • Membrane Glycoproteins
  • PDPN protein, human

Grant support

These authors have no support or funding to report.