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 child's growth variation is normal but bone development is not acc to the chronological age.What is diagnosis ? \nSelect and explain. \nA. Genetic, B. Dwarfism, C. Constitutional delay, D. Familial short stature", 'role': 'user'}, {'content': 'Answer: C \nExplanation: The child in this question has :\n\n\nHeight below 3rd\xa0percentile, i.e., short stature.\nNormal growth velocity, i.e., a normal variant of short stature.\nSkeletal age is less than chronological age.\n\n\nThere are two types of a normal variant of short stature.\n\n\nConstitutional delay in growth\nFamilial genetic short stature\n\n\nIn constitutional delay, the bone age is less than chronological age, while in familial short stature bone age is normal for the chronological age.\nSo, the most likely diagnosis of this child is a constitutional delay in growth.', 'role': 'assistant'}]