Journal
WORLD JOURNAL OF GASTROENTEROLOGY
Volume 25, Issue 3, Pages 300-307Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v25.i3.300
Keywords
Colorectal neoplasia; Colorectal cancer screening; Cold snare resection; Endoscopic polypectomy; Endoscopic mucosal resection; Endoscopic submucosal dissection; Endoscopic full-thickness resection; Adenoma recurrence rate
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Endoscopic polypectomy and endoscopic mucosal resection (EMR) are the established treatment standards for colorectal polyps. Current research aims at the reduction of both complication and recurrence rates as well as on shortening procedure times. Cold snare resection is the emerging standard for the treatment of smaller (< 5mm) polyps and is possibly also suitable for the removal of non-cancerous polyps up to 9 mm. The method avoids thermal damage, has reduced procedure times and probably also a lower risk for delayed bleeding. On the other end of the treatment spectrum, endoscopic submucosal dissection (ESD) offers en bloc resection of larger flat or sessile lesions. The technique has obvious advantages in the treatment of high-grade dysplasia and early cancer. Due to its minimal recurrence rate, it may also be an alternative to fractionated EMR of larger flat or sessile lesions. However, ESD is technically demanding and burdened by longer procedure times and higher costs. It should therefore be restricted to lesions suspicious for high-grade dysplasia or early invasive cancer. The latest addition to endoscopic resection techniques is endoscopic full-thickness resection with specifically developed devices for flexible endoscopy. This method is very useful for the treatment of smaller difficult-to-resect lesions, e.g., recurrence with scar formation after previous endoscopic resections.
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