case_images: PMC2639564_01
case_images: Gross finding of the tumor. The cancer was found (arrows) surrounding the inferior common bile duct.
case_images: 1757-1626-2-51-1.jpg
case_images: PMC2639564_01_1757-1626-2-51-1.jpg
case_images: F1
case_images: The patient had undergone pancreaticoduodenectomy for her tumor surrounding the inferior common bile duct, measuring 11 mm on cut surface (Fig. 1).
case_images: Histology of the tumor (HE staining, x200). A: conventional adenocarcinoma with intraepithelial, intraluminal, and stromal neutrophils. B: micropapillary component invading the Oddi's sphincter. C: micrometastasis in the regional lymph node (arrow).
case_images: 1757-1626-2-51-2.jpg
case_images: PMC2639564_01_1757-1626-2-51-2.jpg
case_images: F2
case_images: Microscopically, it was composed of conventional adenocarcinoma with severe neutrophilic infiltration (Fig. 2A), and a small focus (2 mm in size) of micropapillary carcinoma was found in Oddi's sphincter (Fig. 2B). Resected regional lymph nodes revealed micrometastasis of a few cancer cells in a micropapillary pattern only in one lymph node (Fig. 2C).