Aortic and pulmonary vascular abnormalities on CXR

Aortic and pulmonary vascular abnormalities on CXR Aortic abnormalities on CXR Right aortic arch: Side of aortic arch is recognized by the indentation of tracheal air shadow. Normally it is on the left side as it is left aortic arch. In right aortic arch, the indentation is on the right side. Right aortic arch may be seen in tetralogy of Fallot and truncus arteriosus. Ascending aorta: Ascending aorta is seen well just above the right atrial contour on the right cardiac border when it is dilated. Dilated ascending aorta can occur in: Post stenotic dilatation in aortic stenosis Annuloaortic ectasia in Marfan syndrome Ascending aortic aneurysm Aortic knuckle: Intimal calcification seen as a crescentic shadow is common in older individuals on the lateral aspect of aortic knuckle. The distance between the intimal calcification and the outer border of the aortic knuckle is increased in aortic dissection (typically more than 1 cm). This is known as calcium sign in aortic dissection. Descending aorta: Normally descending aorta is just visible behind the cardiac outline extending slightly beyond the left border of spine. It becomes prominent and tortuous in the elderly and when there is an aneurysm. Coarctation of aorta: In coarctation of aorta, figure 3 sign is composed of the prestenotic dilatation of aorta and left subclavian, indentation at the coarctation site (tuck) and the post stenotic dilatation. Reverse 3 or E sign is a mirror image of this pattern seen as indentation on t...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: HBC 3 sign in coarctation of aorta Antler sign Ascending aorta calcium sign cephalization cottage loaf sign E sign in coarctation of aorta Figure of 8 sign inverted moustache sign knuckle sign Palla’s sign Redistribution Revers Source Type: blogs