Question

what is the medical term that means tumor composed of lymph vessels?
a lymphangioma
b hematoma
c lymphedema
d angioma

Explanation:

The prefix "lymph -" refers to the lymphatic system, and "angioma" means a tumor of blood or lymph vessels. So a tumor composed of lymph vessels is a lymphangioma. Hematoma is a collection of blood outside of blood vessels. Lymphedema is swelling due to a blockage in the lymphatic system. Angioma generally refers to a tumor of blood vessels.

Answer:

A. lymphangioma