This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Musculoskeletal Tumors, Subject name: Radiology
[{'content': 'Punched out lesions in skull are seen in - \nSelect and explain. \nA. Multiple myeloma, B. Hyperparathyroidism, C. Metastasis, D. Osteomalacia', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Multiple myeloma o Punched out lesions of skull are seen both in Eosinophilic granuloma and multiple myeloma. However, beveled edges (double contour) is characteristic of eosinophilic granuloma due to uneven destruction of the inner and outer table of the skull.Punched out lesions of skull - Multiple myelomaPunched out lesions with beveled edges - Eosinophilic granuloma", 'role': 'assistant'}]