Journal Article

Efficacy and safety of endoscopic resection of large colorectal polyps: a systematic review and meta-analysis

Rex, D K, Spada, C, Bhandari, P, Repici, A, Bellisario, Cristina, Sharma, P, Correale, L, Zullo, A, Senore, C, Hassan, C, Bretthauer, M

2016

Overview

ObjectiveTo assess the efficacy and safety of endoscopic resection of large colorectal polyps.DesignRelevant publications were identified in MEDLINE/EMBASE/Cochrane Central Register for the period 1966–2014. Studies in which ≥20 mm colorectal neoplastic lesions were treated with endoscopic resection were included. Rates of postendoscopic resection surgery due to non-curative resection or adverse events, as well as the rates of complete endoscopic removal, invasive cancer, adverse events, recurrence and mortality, were extracted. Study quality was ascertained according to Newcastle-Ottawa Scale. Forest plot was produced based on random effect models. I2 statistic was used to describe the variation across studies due to heterogeneity. Meta-regression analysis was also performed.Results50 studies including 6442 patients and 6779 large polyps were included in the analyses. Overall, 503 out of 6442 patients (pooled rate: 8%, 95% CI 7% to 10%, I2=78.6%) underwent surgery due to non-curative endoscopic resection, and 31/6442 (pooled rate: 1%, 95% CI 0.7% to 1.4%, I2=0%) to adverse events. Invasive cancer at histology, non-curative endoscopic resection, synchronous lesions and recurrence accounted for 58%, 28%, 2.2% and 5.9% of all the surgeries, respectively. Endoscopic perforation occurred in 96/6595 (1.5%, 95% CI 1.2% to 1.7%) polyps, while bleeding in 423/6474 (6.5%, 95% CI 5.9% to 7.1%). Overall, 5334 patients entered in surveillance, 502/5836 (8.6%, 95% CI 7.9% to 9.3%) being lost at follow-up. Endoscopic recurrence was detected in 735/5334 patients (13.8%, 95% CI 12.9% to 14.7%), being an invasive cancer in 14/5334 (0.3%, 95% CI 0.1% to 0.4%). Endoscopic treatment was successful in 664/735 cases (90.3%, 95% CI 88.2% to 92.5%). Mortality related with management of large polyps was reported in 5/6278 cases (0.08%, 95% CI 0.01% to 0.15%).ConclusionsEndoscopic resection of large polyps appeared to be an extremely effective and safe intervention. However, an adequate endoscopic surveillance is necessary for its long-term efficacy.

• Publisher: BMJ Publishing Group Ltd and British Society of Gastroenterology,BMJ Publishing Group LTD
• Subject: Cancer / Colonic Polyps - pathology / Colonic Polyps - surgery / Colonoscopy - adverse effects / ENDOSCOPIC POLYPECTOMY / Endoscopy / Histology / Humans / Intestinal Polyps - pathology / Intestinal Polyps - surgery / Medical Subject Headings-MeSH / Morphology / Polyps / Rectal Diseases - pathology / Rectal Diseases - surgery / Surgery / Surgical outcomes / Surveillance / Systematic review / Treatment Outcome