Arterial thrombosis is associated with an atherosclerotic plaque being ruptured. It is hence associated with high pressure arteries. The thrombus is made of many platelets and contains little fibrin. It can lead to stroke or acute myocardial infarction in the most severe cases.

Venous thrombosis is caused by vessel injury or static blood flow in a low-pressure venous system. The thrombus is made of fibrin and red blood cells with very little platelets. It can detach to form an embolus and may cause pulmonary embolism.

The glove phenomenon is usually the result of arterial injection of a radiopharmacon.

The deposit over time of plaque (lipids and fibrous tissue) in the tunica intrima (inner wall) of arteries is atherosclerosis.

An atheroma is an encysted tumor (fatty deposit) in the internal arterial wall or is the fatty degeneration of that wall.

Microcoil thrombosis or balloon embolization (the insertion via the arterial catheter of a balloon or other obstruction that blocks blood flow through the region of aneurysm) are alternatives to full surgical intervention.