What name is given to an obstruction of an artery by a substance carried by the blood?

Question

What is a localised, blood-filled dilation of a blood vessel caused by disease or weakening of the vessel wall, which most commonly occurs in arteries at the base of the brain and in the aorta?

Answer 1

Embolism
An embolism is the lodging of an embolus, a blockage-causing piece of material, inside a blood vessel. The embolus may be a blood clot (thrombus), a fat globule (fat embolism), a bubble of air or other gas (gas embolism), or foreign material.