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