Clinical audit of colorectal esd performed for large colorectal muosal lesions from a region non-endemic for colorectal cancer - evaluating the predictive factors for difficult resections and determining the learning curve for colorectal esd

Aims ESD – superior Enbloc Resection (ER) rates; CR ESD – technically difficult, time consuming, steep learning curve. Evaluate factors predicting difficulty to perform CR ESD, risk factors for failure of ER; calculate learning curve to achieve competency in CR ESD.