An<unk>  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<unk> , a bubble of air or other gas (gas<unk> , amniotic fluid (amniotic fluid<unk> , or foreign material. An<unk>  can cause partial or total blockage of blood flow in the affected vessel. Such a blockage (a vascular occlusion) may affect a part of the body distant from the origin of the embolus. An<unk>  in which the embolus is a piece of thrombus is called a thromboembolism. An<unk>  is usually a pathological event, i.e., accompanying illness or injury. Sometimes it is created intentionally for a therapeutic reason, such as to stop bleeding or to kill a cancerous tumor by stopping its blood supply. Such therapy is called embolization.
Embolism
Embolus
Thrombosis
Venous thrombosis
Infarction
Coronary thrombosis
Lymphangitis
Vasculitis