(Dr. Benjamin Thomson) Primary liver cancer is cancer that starts in the liver. It's when a malignant tumour or tumours are found in the liver tissue. There are different types of primary liver cancer:
Hepatocellular carcinoma (HCC): starts in the hepatocytes, the main cell type in the liver. HCC, also called hepatoma, is the most common type of primary liver cancer.
Cholangiocarcinoma: starts in the cells lining the bile ducts, which connect the liver to the bowel and gall bladder. It's also called bile duct cancer.
Angiosarcoma: a very rare type of liver cancer starting in the blood vessels. It usually occurs in people over 70.