A hypervascular tumor is a tumor that has an abnormally large number of blood vessels attached to it. The increased blood vessels increase the risk of bleeding, and for this reason hypervascular tumors can often be difficult to remove.

What does Hypervascular mean?

Having a large number of blood vessels.

What does Hypervascular lesion mean?

Hypervascular liver lesions are findings that enhance more or similarly to the background hepatic parenchyma in the late arterial phase, on contrast-enhanced CT or MRI.