Development of benchmark quality criteria for assessing whole-endoscopy Barrett's esophagus biopsy cases

M. J. van der Wel*, L. C. Duits, E. Klaver, R. E. Pouw, C. A. Seldenrijk, G. J.A. Offerhaus, M. Visser, F. J.W. ten Kate, J. G. Tijssen, J. J.G.H.M. Bergman, S. L. Meijer

*Corresponding author for this work

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Abstract

Background: Dysplasia in Barrett's esophagus (BE) biopsies is associated with low observer agreement among general pathologists. Therefore, expert review is advised. We are developing a web-based, national expert review panel for histological review of BE biopsies. Objective: The aim of this study was to create benchmark quality criteria for future members. Methods: Five expert BE pathologists, with 10–30 years of BE experience, weekly handling 5–10 cases (25% dysplastic), assessed a case set of 60 digitalized cases, enriched for dysplasia. Each case contained all slides from one endoscopy (non-dysplastic BE (NDBE), n = 21; low-grade dysplasia (LGD), n = 20; high-grade dysplasia (HGD), n = 19). All cases were randomized and assessed twice followed by group discussions to create a consensus diagnosis. Outcome measures: percentage of ‘indefinite for dysplasia’ (IND) diagnoses, intra-observer agreement, and agreement with the consensus ‘gold standard’ diagnosis. Results: Mean percentage of IND diagnoses was 8% (3–14%) and mean intra-observer agreement was 0.84 (0.66–1.02). Mean agreement with the consensus diagnosis was 90% (95% prediction interval (PI) 82–98%). Conclusion: Expert pathology review of BE requires the scoring of a limited number of IND cases, consistency of assessment and a high agreement with a consensus gold standard diagnosis. These benchmark quality criteria will be used to assess the performance of other pathologists joining our panel.

Original languageEnglish
Pages (from-to)830-837
Number of pages8
JournalUnited European Gastroenterology Journal
Volume6
Issue number6
DOIs
Publication statusPublished - Jul 2018

Keywords

  • Barrett's esophagus
  • benchmark quality criteria
  • digital microscopy
  • intra-observer agreement
  • low-grade dysplasia
  • review panel
  • whole slide imaging

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