Figure 2From: Bile duct adenocarcinoma with minor micropapillary component: a case reportHistology of the tumor (HE staining, ×200). 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).Back to article page