This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'A ten-year-old boy presents to the pediatric emergency unit with seizures. Blood pressure in the upper extremity measured as 200/140 mm Hg. Femoral pulses were not palpable. The most likely diagnosis amongst the following is: \nSelect and explain. \nA. Takayasu aortoarteritis, B. Renal parenchymal disease, C. Grand mal seizures, D. Coarctation of aorta', 'role': 'user'}, {'content': "Answer: D \nExplanation: d. Coarctation of aorta(Ref: Nelson's 20/e p 2205, Ghai 8/e p 431-433)Isolated upper extremity hypertension (200/140mmHg), together with absent/diminished femoral pulses is a characteristic feature of coarctation of aorta.", 'role': 'assistant'}]