Definition of "angiosarcoma" []

• A malignant tumor arising from vascular tissue. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Researchers, including those at the National Cancer Institute, plan to launch three clinical trials later this year in dogs with osteosarcoma, a bone cancer, angiosarcoma, a blood-vessel cancer, and melanoma, the deadly skin cancer."
• "They diagnosed cardiac angiosarcoma, an extremely rare form of cancer."
• "The project began with the study of hemangiosarcoma - angiosarcoma in humans - a cancer for which there are currently no effective treatments."