This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'A 10-year-old boy has a fracture of the femur. the biochemical evaluation revealed Hb 11.5 gm/dL, and ESR 18 Mini Ist hour. Serum calcium 12.8mg/dL, serum phosphorus 2.3 ing/dL, alkaline phosphatase 28 KA units and blood urea 32 mg/dL. Which of the following is the most probable diagnosis in his case- \nSelect and explain. \nA. Nutritional rickets, B. Renal rickets, C. Hyperparathroidism, D. Skeletal dysplasia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The clues given in this question are : -\n\n1. Hypercalcemia\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\n2. Hypophosphatemia\xa0\xa0\xa0\xa0\xa0\xa0\xa0\n3. Raised alkaline phosphatase\n\nAll are seen in hyperparathyroidism\nA low serum phosphorus level with hypercalcemia is characteristic of primary hyperparathyroidism. About other options\nIn Rickets (nutritional or renal) serum calcium will be decreased or normal (not increased).\nSkeletal dysplasia has normal calcium and phosphorus levels.', 'role': 'assistant'}]