 The word is composed of the combining forms of the Greek words ἀγγεῖον ' "vessel" or "cavity" (of the human body) and πλάσσω ' "form" or "mould".A coronary angioplasty is a therapeutic procedure to treat the stenotic (narrowed) coronary arteries of the heart found in coronary heart disease.These stenotic segments of the coronary arteries arise due to the buildup of cholesterol-laden plaques that form in a condition known as atherosclerosis.