Large-duct pattern invasive adenocarcinoma of the pancreas–a variant mimicking pancreatic cystic neoplasms: A minireview

Figure 4 Pathological findings of large-duct pancreatic ductal adenocarcinoma. A: Hematoxylin–eosin (HE) staining of the lesion (× 4); B: HE staining of the lesion (× 200) shows a dilatated glandular carcinoma > 0.5 mm in diameter (black arrowhead); C: Elastica–Masson immunohistochemistry (× 200) reveals that the dilatated glands lack elastic fibers (black arrowhead); D: HE staining of the carcinoma invading the myelin sheath (× 200; black arrowhead); E: Elastica–Masson immunohistochemistry (× 200) reveals that the dilatated glands invading the myelin sheath lack elastic fibers (black arrowheads show the myelin fiber).