A malignant vascular neoplasm arising from the liver. The disease is liver angiosarcoma (MONDO_0002387). Also known as: angiosarcoma (disease) of liver, angiosarcoma of liver, angiosarcoma of the liver, hemangiosarcoma of liver, hemangiosarcoma of the liver, hepatic angiosarcoma, hepatic hemangiosarcoma, liver angiosarcoma (disease).