Chest X-ray findings in coarctation of the aorta may show what feature?

Chest X-ray findings in coarctation of the aorta may show what feature?

• A. Rib notching due to collateral circulation
• B. Cardiomegaly
• C. Pleural effusion
• D. Pulmonary edema

Answer: (A)

Rib notching from enlarged collateral intercostal arteries is a classic chest X-ray sign in coarctation of the aorta. When the aorta narrows, the body develops collateral pathways to route blood around the obstruction, with intercostal arteries enlarging to connect the subclavian region to the descending aorta. These enlarged vessels run along the inferior borders of the ribs and erode the undersides over time, producing notches that are often best seen on the posterior ribs on the left side. This finding is characteristic and helps distinguish coarctation from other chest conditions. Cardiomegaly, pleural effusion, or pulmonary edema can occur in various heart or lung conditions and are not specific features of coarctation.

Rib notching from enlarged collateral intercostal arteries is a classic chest X-ray sign in coarctation of the aorta. When the aorta narrows, the body develops collateral pathways to route blood around the obstruction, with intercostal arteries enlarging to connect the subclavian region to the descending aorta. These enlarged vessels run along the inferior borders of the ribs and erode the undersides over time, producing notches that are often best seen on the posterior ribs on the left side. This finding is characteristic and helps distinguish coarctation from other chest conditions.

Cardiomegaly, pleural effusion, or pulmonary edema can occur in various heart or lung conditions and are not specific features of coarctation.