To collect prospective observational data on patients undergoing ESD, EFTR or STER for UGI neoplastic lesions~Lesion characteristics including histology~Procedural outcomes~Safety Outcomes~Efficacy outcomes
To determine the long term outcomes of Endoscopic Submucosal Dissection (ESD), Endoscopic Full Thickness Resection (EFTR) and Submucosal-Tunnelling Endoscopic Resection (STER) for upper gastrointestinal neoplastic lesions