Submucosal bowel wall layer thickness predicts endoscopic activity in Crohn
Kim Nylund1,2, Ole Kristian Horpestad3, Fredrik Sævik4
1Department of Medicine, Haukeland University Hospital, Bergen, Norway.
Gastrointestinal ultrasound accurately predicts Crohn's disease (CD) activity by measuring bowel wall layers. Submucosal thickness on ultrasound shows high accuracy in assessing endoscopic disease activity in CD patients.
科学分野:
- 消化器病学
- 医用画像
- 炎症性腸疾患
背景:
- クローン病(CD)の管理は、疾患活動性の評価にかかっています。
- 消化管超音波検査は、CDモニタリングのための非侵襲的ツールです。
- 内視鏡的活動性を非侵襲的に予測することは、タイムリーな治療調整のために重要です。
研究 の 目的:
- 消化管超音波検査の壁層測定が、クローン病の内視鏡的活動性を予測できるかどうかを評価すること。
- CD活動性の評価において、個々の腸壁層と腸壁全体の厚さの診断パフォーマンスを比較すること。
主な方法:
- 消化管超音波検査と内視鏡検査を2週間以内に受けた64人のクローン病患者の展望的研究。
- 粘膜層、粘膜下層、固有筋層の絶対的および相対的な厚さの測定。
- 内視鏡的活動性を定義するために、超音波検査所見とクローン病単純内視鏡的スコア(SES-CD)との比較。
主要な成果:
- 内視鏡的活動性(SES-CD >2)のある患者では、粘膜層、粘膜下層、固有筋層の絶対的な厚さの増加が観察されました。
- 粘膜下層の厚さ1.8 mmのカットオフ値は、疾患活動性を予測するために90%の感度、78.3%の特異度、および84.9%の精度を示しました。
- 腸壁全体の厚さ3 mmは、粘膜下層の厚さと比較して、より高い感度(97.3%)を示しましたが、特異度(52.0%)は低かったです。
結論:
- 活動性クローン病の患者では、すべての腸壁層が肥厚しています。
- 消化管超音波検査で測定された粘膜下層の厚さは、腸壁全体の厚さと同等に、CDの内視鏡的疾患活動性の信頼できる指標です。
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