ArticleInflammatory bowel diseases2025
Undetected Dysplasia at Colectomy in Patients With Inflammatory Bowel Diseases. What Are We Missing?
Article in Inflammatory bowel diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
BACKGROUND AND
aimsPatients with inflammatory bowel disease (IBD) have a higher risk of developing colorectal dysplasia and colorectal cancer compared to the general population. Although the use of surveillance protocols has improved the ability to detect dysplasia, some lesions are still missed at colonoscopy. This study aims to determine the rate of dysplastic lesions that are undetected at colonoscopies in IBD patients undergoing colectomy and to identify factors associated with missed dysplasia.
methodsPatients who had received a total or subtotal colectomy at Mayo Clinic (Rochester, Minnesota), between January 2003 and December 2022, and had a complete colonoscopy within 5 years before surgery were retrospectively enrolled. Data abstracted included demographic information, disease-related data, colonoscopy and pathology reports, and surgery pathology reports. Colonoscopy and surgery findings were compared, and patients were divided into 3 groups: no dysplasia at both, detected dysplasia, and undetected dysplasia.
resultsAmong 1320 IBD patients undergoing colectomy, 5.4% had undetected dysplastic lesions identified only at surgery. Factors independently associated with dysplasia detection were endoscopic remission or mild endoscopic disease activity (odds ratio [OR], 2.326; P = .0081; 95% CI, 1.246-4.342), prior dysplasia detection (OR, 1.876; P = .0491; 95% CI, 1.002-3.511), colonoscopy performed for surveillance (OR, 2.380; P = .0048; 95% CI, 1.302-4.350), and longer disease duration at surgery (OR, 1.039; P = .0085; 95% CI, 1.010-1.070).
conclusionsClinicians should be aware of the risk of missing dysplastic lesions, especially when endoscopic disease activity is moderate/severe, and not only for longstanding disease. Efforts should be made to obtain endoscopic remission to make the "invisible" visible.
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