Which term is defined as a tumor of a blood vessel?

• A. Ankylosis
• B. Angioma
• C. Antepartum
• D. Angioplasty

Answer: (B)

A tumor of a blood vessel is called an angioma. The word breaks down into angio-, meaning blood vessel, and -oma, meaning a tumor or growth. So the term literally describes a growth formed from vessels, which is exactly what a vascular tumor is. Angiomas are typically benign, such as capillary hemangiomas. By contrast, ankylosis means joint stiffness or fusion, antepartum refers to the period before birth, and angioplasty is a procedure to widen a narrowed blood vessel—none of these describe a vascular tumor.