Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
β-catenin-activated HCA with malignant transformation in a young boy with congenital absence of the portal vein. Microscopic view of the adenoma on the right and of the hepatocellular carcinoma on the left with vascular invasion indicated by arrows ((a), Obj ×10). The adjacent nontumoral liver shows hypoplastic portal vein branches in middle-sized portal tracts (arrows) ((b), Obj ×20).
