Outcomes Following Surgery For Completely Removed Colonic Lateral Spreading Lesions Containing Sub-Mucosal Invasive Cancer

Management of malignant colorectal polyps can be endoscopic or surgical but the best approach has yet to be defined since prospective data is lacking. Endoscopic mucosal resection (EMR) is the treatment of choice for large (>20 mm) lateral spreading colonic lesions (LSL) with high success rates, good safety profile and clinical and economic advantages compared with surgery. There is no data on the outcome and management of malignant LSL (M-LSL) following complete removal by piecemeal EMR. We aimed to determine if salvage surgery for M-LSL following complete EMR resection is necessary