What’s the name of the blood vessel transformation that has relatively large blood-filled spaces and does not contain tissue of the organ in which they are situated?

Question: What’s the name of the blood vessel transformation that has relatively large blood-filled spaces and does not contain tissue of the organ in which they are situated?

Choices:

Bloodioma
Canceroma
Lymphoma
Cavernous hemangioma

Correct answer:

Cavernous hemangioma