ERBB2 and periampullary adenocarcinoma: Diffuse membranous staining was found for integrin αvβ6, CEA, cMET, EGFR, HER2, and uPAR in pancreatic adenocarcinoma (Table 3) and integrin αvβ6, CEA, cMET, EGFR, EpCAM, HER2, and VEGFR2 in periampullary adenocarcinoma (Table 4).