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  • Title: The efficacy and safety of argon plasma coagulation (APC) in the management of polyp remnants in stomach and colon.
    Author: Neneman B, Gasiorowska A, Małecka-Panas E.
    Journal: Adv Med Sci; 2006; 51():88-93. PubMed ID: 17357283.
    Abstract:
    PURPOSE: Endoscopic treatment of sessile and semipedunculated polyps remains controversial. Residual tissue remains frequently after endoscopic snare polypectomy. The aim of the study was to assess the outcome and safety of argon plasma coagulation (APC) in the management of gastric and colorectal polyp remnants after polypectomy, and to search for clinical parameters useful in predicting the efficacy of this technique. MATERIAL AND METHODS: This prospective study comprised 18 patients with gastric polyps and 29 with colonic polyps found in upper and lower GI endoscopy. Overall 22 gastric polyps and 58 colonic polyps have been detected. All those polyps were removed at colonoscopy with the diathermic snare and the polyp remnants were destroyed with APC using Argon Beamer source (Erbe, Germany). Follow-up endoscopies have been performed 1, 3 and 6 months after the treatment completion. RESULTS: Pathologic examination revealed 10 hyperplastic polyps and 12 tubular adenomas of the stomach. Effective destruction of polyp remnants was achieved in 20 (90.9%) gastric polyps in 16 (88.9%) patients. Significant positive correlation was demonstrated between the power output, APC sessions number and polyp location in the prepyloric part, its size and adenomatous content. Among colonic polyps there were: 17 hyperplastic, 26 tubular, 8 tubulo-villous, 4 villous adenomas and 3 inflammatory pseudopolyps. Effective destruction of remnant polyp tissue was obtained in 56 (96.4%) polyps in 27 (93.1%) patients. A significant positive correlation between the power output and the size, distal location and villous texture of the polyp has been demonstrated. No complications other than mild abdominal distention have been encountered. CONCLUSIONS: APC is an effective and safe method in the management of polyp remnants in the stomach and colon. The application of higher electric power and numerous APC sessions are necessary to remove residues of large gastric polyps located in the prepyloric part and of with adenomatous content. In the case of colonic polyps the application of higher electric power should be recommended in case of large-sized lesions, located in rectum and of villous texture.
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