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Related Experiment Videos

Variable pathologic interpretation of columnar lined esophagus by general pathologists in community practice.

M Alikhan1, D Rex, A Khan

  • 1Department of Medicine, Division of Gastroenterology/Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA.

Gastrointestinal Endoscopy
|July 1, 1999
PubMed
Summary

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Pathologists show significant disagreement in interpreting columnar lined esophagus biopsies, leading to varied diagnoses of dysplasia and Barrett's esophagus. Expert review is recommended for accurate interpretation of high-grade and low-grade dysplasia.

Area of Science:

  • Gastroenterology
  • Pathology
  • Oncology

Background:

  • Accurate pathologic interpretation of columnar lined esophagus is crucial for guiding patient management, including surveillance and surgical decisions.
  • This study assesses the consistency of pathologic interpretations of columnar lined esophagus among general pathologists in community practice.

Purpose of the Study:

  • To evaluate the interobserver variability in the pathologic interpretation of columnar lined esophagus biopsy specimens by general pathologists.
  • To assess the accuracy of diagnosing dysplasia and metaplasia in columnar lined esophagus.

Main Methods:

  • Twenty general pathologists reviewed five histologic slides of columnar lined esophagus.
  • Cases included intestinal metaplasia with varying degrees of dysplasia (none, low-grade, high-grade) and gastric metaplasia (fundic-type, cardia-type).

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Main Results:

  • Significant interobserver variation was observed in classifying high-grade dysplasia (identified by 30%) and low-grade dysplasia (identified by 35%).
  • Interpretations ranged from no dysplasia to invasive adenocarcinoma, highlighting diagnostic challenges.
  • Gastric metaplasia was frequently misidentified as Barrett's esophagus (38% of cases).

Conclusions:

  • Pathologic interpretation of columnar lined esophagus by community pathologists exhibits substantial interobserver variability.
  • The frequent misapplication of the term Barrett's esophagus for columnar lined esophagus without goblet cells, which lacks clear cancer risk association, suggests reconsidering its use.
  • Expert consultation for interpreting high-grade and low-grade dysplasia in esophageal pathology is supported by these findings.