Fatty deposits make coronary arteries narrow and cause symptoms such as chest pain and/or a heart attack. Angioplasty and stent placement allows the physician to open narrowed arteries without surgery. A small balloon is inserted using a catheter and then inflated at the area of the fatty deposits. Stent placement is the placing of a small, permanent metal tube in the artery where the fatty deposits are, to help keep it open. A patient can have more than one stent placed.