What makes up (from top to bottom) the right cardiomediastinal border?
Right paratracheal stripe, arch of the azygous vein, superior vena cava (or ascending aorta in older pts), right atrium, inferior vena cava (IVC)
What makes up (from top to bottom) the left cardiomediastinal border?
Left paratracheal stripe (made up of left common carotid artery, left subclavian artery and the left jugular vein), aortic arch, pulmonary artery, auricle of left atrium, left ventricle.
When visible, where is the aortic nipple and what structure accounts for it?
The aortic nipple is a small protuberance from the aortic knuckle, seen on frontal chest radiograph. It is due to the superior intercostal vein.
What makes up (from top to bottom) the anterior cardiomediastinal border?
Superior mediastinum (great vessels & thymus), ascending aorta, right ventricular outflow tract, right ventricle.
Chest x-ray demonstrate normal cardiomediastinal outlines. No pulmonary or pleural mass identified. There is a minor degree of hyperinflation, which may represent a degree of underlying COPD.