EMR describes the endoscopic technique of treating colorectal adenomatous polyps with submucosal lifting and careful piecemeal snare resection. This procedure has been shown to be safe and effective at resecting lesions limited to the mucosa. Clearly the importance of predicting lesions that are unlikely to have invaded the deeper layers is of the utmost importance here, and significant improvements in our ability to assess this have been made in large volume centres such as Westmead