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;