A 16-year-old boy is found to have hypertension on routine evaluation. On examination, the blood pressure in his arms is higher than in his legs by more than 10 mm Hg. Which of the following is the most likely diagnosis?

Besides coarctation of the aorta, aortic occlusive disease, dissection of the aorta, and abdominal aneurysm may lead to differential blood pressure in arms and legs. Coarctation is the third most common form of congenital cardiac disease. One-third of the patients will be hypertensive. The femoral pulses are weak, delayed, and even absent.