Tumors
– Tubular adenoma
– Tubulovillous adenoma
– Villous adenoma
– Non-invasive pancreatobiliary papillary neoplasm with ***-grade dysplasia
– Intra-ampullary papillary-tubular neoplasm
– Invasive adenocarcinoma (see comment)
Types of adenocarcinoma: Intestinal-type, Mucinous, Signet-ring cell carcinoma, Medullary carcinoma, Pancreatobiliary-type, Tubular