Neoplasm is the term meaning new growth of tumor.
The term for new formation of blood vessels is angiogenesis.
A hemangioma is the medical term meaning tumor of blood vessels.
Narrowing of the blood vessels is called atherosclerosis.
vascular
Avascular is the medical term meaning without blood vessels.
Neoplasm is the medical term meaning tumor; a neoplasm can be malignant (cancerous) or benign.
The smallest blood vessels are the capillaries.
Vasculitis
Blood vessels
Fluorescein angiography is the medical term meaning radiographic study of the blood vessels of the retina. This process can examine retinal vessels in the case of diabetes.
Angioblast
plaque