Acknowledgements The  Clinical Research Unit (Pôle IMER, Hospices Civils de Lyon ) has developed the initial MS Access © database which served as the basis for the actual Webdatabase and. It also provides technical support for the data quality control. The members of the RENAPE Network organization which participate to the RENAPE Registry include:  Julio Abba, MD  ( Department of Digestive Surgery, Grenoble University Hospital, Grenoble, France );  Karine Abboud, MD  ( Department of General Surgery, CHU Hospital, Jean Monnet University, Saint Étienne, France );  Mohammad Alyami, MD  ( Department of Digestive Surgery, Lyon-Sud University Hospital, Lyon, France );  Catherine Arvieux, MD, PhD  ( Department of Digestive Surgery, Grenoble University Hospital, Grenoble, France );  Gerlinde Averous, MD  ( Department of Pathology, Hautepierre University Hospital, Strasbourg, France );  Naoual Bakrin, MD, PhD  ( Department of Digestive Surgery, Lyon-Sud University Hospital, Lyon, France );  Gisèle Balagué, MD  ( Department of Radiology, Claudius Regaud Institute IUTC, Toulouse, France );  Vincent Barrau, MD  ( Department of Radiology, Centre cardiologique du Nord, Saint Denis, France );  Houda Ben Rejeb, MD  ( Department of Pathology, Bergonie Institute, Bordeaux, France );  Jean-Marc Bereder, MD, PhD  ( Department of Digestive Surgery, Archet 2 University Hospital, Nice, France );  Isabelle Berton-Rigaud  ( Department of Digestive Oncology, ICO René Gauducheau Cancer Center, Saint-Herblain, France );  Isabelle Bonnefoy  ( Department of Digestive Surgery, Lyon-Sud University Hospital, Lyon, France );  Dominique Bouzard, MD , ( Department of Surgery, Louis Mourier University Hospital, Colombes, France );  Ivan Bricault, MD, PhD  ( Department of Radiology, Grenoble University Hospital, Grenoble, France );  Cécile Brigand, MD, PhD  ( Department of Digestive Surgery, Hautepierre University Hospital, Strasbourg, France );  Sébastien Carrère, MD  ( Department of Surgical Oncology, Val d'Aurelle Montpellier Cancer Center, Montpellier, France );  Cécile de Chaisemartin, MD  ( Department of Surgical Oncology, Paoli Calmettes Institute, Marseille, France );  Madleen Chassang, MD  ( Department of Radiology, Archet 2 University Hospital, Nice, France );  Anne Chevallier, MD  ( Department of Pathology, Archet 2 University Hospital, Nice, France );  Thomas Courvoisier, MD  ( Department of Digestive Surgery, Poitiers University Hospital, Poitiers, France );  Peggy Dartigues, MD  ( Department of Pathology, Gustave Roussy Institute, Villejuif, France );  Anthony Dohan, MD, PhD  ( Department of Radiology, Lariboisière University Hospital, Paris, France );  Clarisse Dromain, MD  ( Department of Radiology, Gustave Roussy Institute, Villejuif, France );  Julien Dubreuil, MD, PhD  ( Department of Radiology, Lyon-Sud University Hospital, Lyon, France );  Frédéric Dumont, MD  ( Department of Surgical Oncology, ICO René Gauducheau Cancer Center, Saint-Herblain, France );  Clarisse Eveno, MD, PhD  ( Surgical Oncologic & Digestive Unit, Lariboisière University Hospital, Paris, France );  Marie Faruch-Bilfeld, MD  ( Department of Radiology, University Hospital of Toulouse, Toulouse, France );  Gwenaël Ferron, MD  ( Department of Surgical Oncology, Claudius Regaud Institute IUTC, Toulouse, France );  Juliette Fontaine, MD  ( Department of Pathology, Lyon-Sud University Hospital, Lyon, France );  Laure Fournier  ( Department of Radiology, G.