|Micrograph of an angiosarcoma. H&E stain.|
Angiosarcoma is a cancer of the cells that line the walls of blood vessels or lymphatic vessels. The lining of the vessel walls is called the endothelium. However, they should not be confused with cherry hemangiomas.
Most tumors of visceral blood and lymphatic vessel walls are cancerous (malignant). Because these cancers are carried by the blood flow or lymphatic flow, they can more easily metastasize to distant sites, particularly the liver and lungs.
In dogs, hemangiosarcoma is relatively common, especially in larger breeds such as golden retrievers and Labrador retrievers. In humans, hemangiosarcomas and lymphangiosarcomas of the skin are uncommon. Angiosarcoma of the liver, a rare fatal tumor, has been seen in workers intensively exposed to the gas vinyl chloride monomer (VCM) for prolonged periods while working in polyvinyl chloride (PVC) polymerization plants. It has also been associated with individuals exposed to arsenic-containing insecticides and Thorotrast.
- Kaposi's sarcoma, a different type of cancer that also involves endothelial-type cells
- List of cutaneous conditions
- Stewart–Treves syndrome