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': 'Radiological features in rickets? \nSelect and explain. \nA. Cupping of distal end of radius, B. Widening of distal end of metaphvsis, C. Thickening of growth plate, D. All of above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Rachitic changes are most easily visualized on posteroanterior radiographs of the wrist, although characteristic rachitic changes can be seen at other growth plates, \nDecreased calcification leads to thickening of the growth plate. \nThe edge of the metaphysis loses its sharp border, which is described as fraying, the edge of the metaphysis changes from a convex or flat surface to a more concave surface. This is termed cupping and is most easily seen at the distal ends of the radius, ulna, and fibula.\nThere is a widening of the distal end of the metaphysis, corresponding to the clinical observation of thickened wrists and ankles, as well as the rachitic rosary.\nOther radiologic features include coarse trabeculation of the diaphysis and generalized rarefaction', 'role': 'assistant'}]