Endoscopic Treatment for Local Residual Neoplasia

Endoscopic treatment will be performed according to the type of local residual neoplasia (LRN): A - endoscopically negative scar and neoplastic tissue found only in biopsy specimens - treatment by argon plasmacoagulation, B - endoscopically aparent LRN \< 5 mm - forceps biopsy + argon plasmacoagulation, C - endoscopically evident LRN \> 5 mm + lifting during submucosal injection - endoscopic mucosal resectio + argon plasmacoagulation, D - endoscopically evident LRN \> 5 mm + non-lifting during submucosal injection - endoscopic submucosal disection (ESD) or surgical resection