Radiology The sign marked by the arrows pointing to the ribs, in the below chest X-ray, is diagnostic of which of the following conditions? A Hyperthyroidism B Chronic renal failure C Coarctation of aorta D Multiple myeloma 💡 Explanation The sign marked by the arrows pointing to the ribs, in the below chest X-ray, is diagnostic of which of the following conditions? ✓ Correct Answer: C. Coarctation of aorta