Hemangioma
It is called a hemangioma (hem- means blood, -angi- means vessel, -oma means tumor).
Hemangioma
hemangioma
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.)
Angionecrosis
angiographic
Avascular is the medical term meaning without blood vessels.
Extravasate means to leak out side of a blood vessel.
telangiectasia
Angiolith
IntimaEndothelium
The lumen is the space within the blood vessel (or within any tubular structure).
Thrombectomy
Neoplasm is the medical term meaning tumor; a neoplasm can be malignant (cancerous) or benign.
Vasoconstriction is the normal narrowing of a blood vessel.