Benign liver tumors: This type of tumor can become large enough to cause problems but will not spread to other areas of the body. The treatment is usually surgery.Hemangioma: A hemangioma is a blood vessel tumor that only requires treatment if it bleeds.Hepatic adenoma: This is a type of benign liver tumor, which may cause abdominal pain or blood loss. Surgical removal is usually recommended.Focal nodular hyperplasia (FNH): This tumor is made up of several different types of cells (liver, bile duct, and connective tissue cells).Liver angiosarcoma (or hepatic angiosarcoma) and hemangiosarcoma are rare. This is a cancer of the inner lining of the blood vessels. Since the symptoms of liver angiosarcoma are nonspecific, usually this type of liver cancer is not discovered until it is too late to be treated effectively.Hepatocellular carcinoma: This is the most common form of primary cancer. Primary liver cancer is cancer that began in the liver. It can occur as a single tumor or many small cancer nodules throughout the liver. Primary liver cancer will commonly spread to the lungs, the portal vein (kidney), and portal lymph nodes.Intrahepatic cholangiocarcinoma (bile duct cancer): As described by its name, this cancer starts where the bile duct connects to the liver. Between 10%-15% of liver cancers are of this type. This type of cancer commonly spreads (metastasis) to the lymph nodes, lung, and bone marrow.Hepatoblastoma: This is a rare cancer found in children, usually under age 4. This cancer is treated, successfully in most cases, with surgery and chemotherapy.Secondary cancer: This is a cancer that started elsewhere in the body and spread to the liver. This spread of cancer from a primary site to other parts of the body is called metastasis. Secondary liver cancer is more common in the United States than primary liver cancer. A secondary cancer will be treated by the techniques that have been successful for the primary type of cancer. For example, lung cancer that has spread to the liver will be treated using lung cancer protocols, which are the standards of medical care that have been effective for lung cancer.Lymphoma, a cancer of the immune system including the lymph nodes, also commonly spreads to the liver. Pancreatic cancer may also spread to the liver.