General Surgery Unit,Department of Translational Research and New Technologies in Medicine and Surgery,University of Pisa,Pisa 56124,Italy;
Division of Surgical Pathology,University-Hospital of Pisa,Pisa 56124,Italy;
Department of Surgical,Medical,Molecular Pathology and Critical Area,University of Pisa,Pisa 56124,Italy;
Department of Surgery,University of Colorado,Denver,CO 80045,United States;
Ampullary adenocarcinoma; Histo-molecular phenotype; Prognostic; CK7; CK20; CDX2;