<prompt> Left cardiac border bulge can be seen in all, except -Enlarged azygous veinLeft appendicular overgrowthCoronary aery aneurysmPericardial defect  <response>: Azygous vein is a Right sided structureand all others are left sided.It lies in thr angle between the right main bronchus and trachea and size is10mm diameter on erect X-ray. 