Avascular is the medical term meaning without blood vessels.
Phlebitis is the medical term meaning inflammation of a blood vessel. (Thrombophlebitis is the medical term meaning inflammation of a blood vessel with a clot.)
angiographic
Angionecrosis
telangiectasia
IntimaEndothelium
Angiolith
Extravasate means to leak out side of a blood vessel.
Extraoral is the medical term meaning outside the mouth.
Thrombectomy
Vasoconstriction is the normal narrowing of a blood vessel.
The lumen is the space within the blood vessel (or within any tubular structure).
Ischemia