a rare blood vessel tumour which often occurs in the skin, liver, and spleen.

In liver cancer, it is characterized by tumors that arise from the blood vessels in the liver. It can also occur in other parts of the body, including the spleen and the lungs.

Hemangioendothelioma is used to describe a group of vascular neoplasms that may be considered benign or malignant in their activity. They have been described as masses that fall between a hemangioma and angiosarcoma. They are vascular tumors that commonly present with an enlarging mass and have been reported in the head and neck, intestines, lungs, lymph nodes, pleura, retroperitoneum, stomach, and many other body sites.

See Hemangioendotheliomas.