Colorectal Adenoma ≥6 mm: When Is Intervention Indicated?
Colorectal adenomas reaching or exceeding 6 mm in size carry a meaningfully higher risk of carcinoma than smaller lesions, placing them in a distinct management category that calls for a defined endoscopic approach.
Clinical Scenario
This protocol addresses patients with a confirmed colorectal adenoma where the lesion measures 6 mm or larger.
Colorectal adenoma — lesion size ≥6 mm
Treatment Approach
The recommended strategy involves endoscopic resection of the lesion. The choice among available endoscopic techniques — including approaches that differ in depth of resection and suitability for lesion characteristics — is guided by the full structured protocol.
References
DOI: 10.1007/s00535-021-01776-1
- It is strongly recommended that endoscopic resection be performed for lesions ≥6 mm in size because the incidence of carcinoma is higher in lesions ≥6 mm than in those ≤5 mm.
- Endoscopic resection should be performed for lesions ≥6 mm in size (recommendation strong [agreement rate 100%], level of evidence B).
- Based on the results of meta-analyses, endoscopic polypectomy and endoscopic mucosal resection (EMR)/endoscopic submucosal dissection (ESD) are now preferred as optimal, less invasive treatments for colorectal neoplasia.
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