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Evaluation of diagnostic criteria for Crohn's disease in Japan

Takashi Hisabe1, Fumihito Hirai, Toshiyuki Matsui

  • 1Department of Gastroenterology, Fukuoka University Chikushi Hospital, 1-1-1 Zokumyoin, Chikushino, Fukuoka, 818-8502, Japan, hisabe@cis.fukuoka-u.ac.jp.

Journal of Gastroenterology
|April 3, 2013
PubMed

Insights

Japanese doctors frequently diagnose Crohn's disease (CD) using specific endoscopic findings like longitudinal ulcers (LU) or cobblestone-like appearance (CSA). These key morphological features are crucial for confirming CD diagnoses nationwide.

Area of Science:

  • Gastroenterology
  • Internal Medicine
  • Diagnostic Criteria Research

Background:

  • Crohn's disease (CD) diagnosis in Japan relies on established criteria.
  • No prior nationwide study identified which specific criteria are predominantly used.

Purpose of the Study:

  • To investigate the specific diagnostic criteria utilized for Crohn's disease in Japan.
  • To determine the frequency of use for various criteria in CD diagnosis.

Main Methods:

  • A nationwide questionnaire survey was conducted among Japanese medical institutions.
  • Data collected from 579 definitively diagnosed and 59 suspected CD patients (diagnosed before Jan 2011).

Main Results:

  • 87.4% of definitive CD diagnoses utilized major findings: longitudinal ulcer (LU) or cobblestone-like appearance (CSA).
  • 30.4% of definitive diagnoses incorporated non-caseating epithelioid cell granuloma (NCEG) with specific minor findings.
  • 7.1% of definitive diagnoses relied on characteristic gastric/duodenal lesions.
  • 74.6% of suspected CD diagnoses were based on one or two minor findings.

Conclusions:

  • The Japanese diagnostic criteria for Crohn's disease are based on combinations of morphological findings.
  • Longitudinal ulcers (LU) and cobblestone-like appearance (CSA) are the most frequently applied criteria for diagnosing CD in Japan.
Abstract

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