This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Radiology
[{'content': "Egg shell calcification is seen in all except: \nSelect and explain. \nA. Silicosis, B. Sarcoidosis, C. Coal worker's pneumoconiosis, D. Osteogenic sarcoma", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans: d (Osteogenic sarcoma)Egg shell calcification of lymph node in chest X-ray seen in:* Silicosis* Sarcoidosis* Coal worker's pneumoconiosis* Lymphoma following radiotherapy* Histoplasmosis* Amyloidosis* Scleroderma", 'role': 'assistant'}]