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: Radiology
[{'content': "Increased Radioisotope uptake is seen in A/E \nSelect and explain. \nA. Primary bone tumor, B. Osteomylitis, C. Paget's disease, D. Pseudoahrosis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Pseudoahrosis', 'role': 'assistant'}]