1 Department of Digestive and Oncological Surgery, University Hospital of Lille, Lille, France Department of Digestive and Oncological Surgery, University Hospital of Lille, Lille, France, University of Lille-Nord de France, Lille, France, Inserm, UMR837, Jean-Pierre Aubert Research Center, Team 5 Mucins, Epithelial Differentiation and Carcinogenesis, SIRIC ONCOLille, Lille Cedex, France.