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  • Title: Endoscopic resection of large colorectal polyps.
    Author: Pérez Roldán F, González Carro P, Legaz Huidobro ML, Villafáñez García MC, Soto Fernández S, de Pedro Esteban A, Roncero García-Escribano O, Ruiz Carrillo F.
    Journal: Rev Esp Enferm Dig; 2004 Jan; 96(1):36-47. PubMed ID: 14971996.
    Abstract:
    BACKGROUND: Endoscopic polypectomy is a common technique, but there are discrepancies over which treatment--surgical or endoscopic--to follow in case of polyps of 2 cm or larger. OBJECTIVES: To analyse the efficacy and complications of colonoscopic polypectomy of large colorectal polyps. PATIENTS AND METHODS: 147 polypectomies were performed on 142 patients over an eight-year period. The technique used was that of submucosal adrenaline 1:10000 or saline injection at the base of the polyp, followed by resection of the polyp using a diathermic snare in the smallest number of fragments. Remnant adenomatous tissue was fulgurated with an argon plasma coagulator. Lately, prophylactic hemoclips have been used for thick-pedicle polyps. Complete removal was defined as when a polyp was completely resected in one or more polypectomy sessions. Polypectomy failure was defined as when a polyp could not be completely resected or contained an invasive carcinoma. RESULTS: The mean patient age was 67.9 years (range, 4-90 years), with 68 men and 79 women. There were 74 sessile polyps, and the most common location was the sigmoid colon. The most frequent histology was tubulovillous. Most of the polyps (96.6%), were resected and cured. This was not achieved in four cases of invasive carcinoma, and a villous polyp of the cecum. All pedunculated polyps were resected in one session, whereas the average number of colonoscopies for sessile polyps was 1.35 +/- 0.6 (range, 1-4). The polypectomy was curative in all of the in situ carcinomata except one. As for complications, 2 colonic perforations (requiring surgery) and 8 hemorrhages appeared, which were controlled via endoscopy. There was no associated mortality. CONCLUSIONS: Endoscopic polypectomy of large polyps (> or =2 cm) is a safe, effective treatment, though it is not free from complications. Complete resection is achieved in a high percentage, and there are few relapses. It should be considered a technique of choice for this type of polyp, except in cases of invasive carcinoma.
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