PMC2639564_01
Gross finding of the tumor. The cancer was found (arrows) surrounding the inferior common bile duct.
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PMC2639564_01_1757-1626-2-51-1.jpg
F1
The patient had undergone pancreaticoduodenectomy for her tumor surrounding the inferior common bile duct, measuring 11 mm on cut surface (Fig. 1).
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).
1757-1626-2-51-2.jpg
PMC2639564_01_1757-1626-2-51-2.jpg
F2
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).