||The English used in this article or section may not be easy for everybody to understand. (October 2011)|
Liver cancer is malignant tumors on, or in, a liver. The most common form of liver cancer is hepatocellular carcinoma, which is more common in those with cirrhosis of the liver, which may be caused by alcohol abuse, Wilson's disease, or hepatitis. Hepatoblastoma occurs most often in children.