PMC

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

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

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

Abdominal ultrasound examination, showing an encapsulated, rather heterogeneous, hypoechoic tumor, 6.5 cm in maximum diameter, with a beak sign.

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

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.