Ectopic hepatocellular carcinoma arising from pancreas: A case report and review of the literature

Figure 1 Abdominal ultrasound examination, showing an encapsulated, rather heterogeneous, hypoechoic tumor, 6. 5 cm in maximum diameter, with a beak sign.

Figure 2 Helical dynamic CT, revealing an irregularly enhanced tumor with pooling of contrast medium in the delayed phase.

Figure 3 Abdominal angiography. The tumor was hypervascular, fed by both the splenic artery and dorsal pancreatic artery from the superior mesenteric artery.

Figure 4 Macroscopic findings. The cut surface of the mass was reddish-yellow, with focal hemorrhage and a necrotic appearance.

Figure 5 Histological findings (HE, x 400). The tumor cells grew in trabeculae that were separated by sinusoid-like blood spaces. These tumor cells were polygonal with fine granular eosinophic cytoplasm, resembling hepatocytes.

Figure 6 Immunohistochemical staining (HEPPAR-1). The tumor cells were positive for HEPPAR-1, suggesting that they had the nature of hepatocytes.