Jean-Luc Faucheron1, Adrian Mancini, Fabian Reche. 1. 1 Colorectal Unit, Department of Surgery, Michallon University Hospital, Grenoble, France 2 University Grenoble Alps, UMR 5525, CNRS, TIMC-IMAG, Grenoble, France 3 Ambulatory Unit, Department of Surgery, Michallon University Hospital, Grenoble, France.