Statistical Analysis Plan (SAP): What is it and how to develop it? Marc Fradera; Xavier Serra-Aracil;

Excision of a large adenovillous lesion (four quadrants) with peritoneal perforation via Transanal Endoscopic Operation (TEO). Step-by-step surgical strategy Xavier Serra-Aracil; Jesus Badia-Closa;

Local resection in rectal cancer: When, who and how? Jesus Badia-Closa; Juan Pablo Campana; Gustavo Leandro Rossi; Xavier Serra-Aracil;