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  • Title: Outcome and risk of recurrence for endoscopic resection of colonic superficial neoplastic lesions over 2 cm in diameter.
    Author: Margagnoni G, Angeletti S, D'Ambra G, Pagnini C, Ruggeri M, Corleto VD, Di Giulio E.
    Journal: Dig Liver Dis; 2016 Apr; 48(4):399-403. PubMed ID: 26826904.
    Abstract:
    BACKGROUND: Large colorectal superficial neoplastic lesions are challenging to remove. This study aimed to assess the outcomes of routine endoscopic resection of large (≥2 cm and <3 cm) and giant (≥3 cm) lesions. METHODS: From 4587 endoscopic resections, 265 (5.7%) large and giant lesions were removed in 249 patients. We retrospectively analyzed 125 patients (141 endoscopic mucosal resection, 73 large and 68 giant lesions) with a follow-up of 6-12 months. Rate of en bloc and piecemeal resection, recurrence and risk factors were analyzed. RESULTS: En bloc was performed in 92 cases (65.2%) and piecemeal resection in 49 (34.8%). A complete endoscopic resection was achieved in 139 cases (98.5%) with radical resection in 84/139 cases (60.4%). Argon plasma coagulation was applied in 18/141 lesions (12.8%). A recurrence occurred in 16/139 lesions (11.5%). The risk of recurrence at one year was significantly higher for giant than large lesions (p=0.03). The recurrence risk was higher in treated than in non-argon plasma coagulation treated lesions (p=0.01). CONCLUSIONS: endoscopic mucosal resection is a safe and effective routine treatment for large superficial neoplastic lesions. The risk factors for recurrence include giant size, non-protruding morphology, piecemeal technique and argon plasma coagulation.
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