What is angiosarcoma?

Angiosarcoma is a type of cancer that begins in the cells that line the blood vessels or lymph vessels. It is a type of soft-tissue sarcoma, which are solid tumors that begin in tissues that connect, support, or surround organs and other body tissue.

Angiosarcoma is very rare — occurring in only about two people per 1 million. It is more common in adults than children, and it is treated differently in adults than children. The tumor behaves differently in each person. All angiosarcomas need aggressive evaluation and treatment.

How we care for angiosarcoma

Because angiosarcoma is so rare, very few doctors have experience diagnosing and treating it. The Vascular Anomalies Center at Boston Children's Hospital, in partnership with the Dana-Farber/Boston Children's Solid Tumor Center, has evaluated more children with angiosarcoma and other rare vascular tumors than any other hospital in the world. Our physicians — representing 16 medical and surgical specialties, including radiologists and pathologists who specialize in diagnosing vascular anomalies — take an interdisciplinary approach to care with every child we see.

Learn more about angiosarcoma

Get more information about angiosarcoma on the Dana-Farber/Boston Children’s website, including answers to:

  • How is angiosarcoma classified?
  • How is angiosarcoma diagnosed?
  • What are the treatments for angiosarcoma?
  • What is the latest research on angiosarcoma?
  • What is the long-term outlook for angiosarcoma?