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
Egg shell calcification is seen in all except: 
Select and explain. 
A. Silicosis, B. Sarcoidosis, C. Coal worker's pneumoconiosis, D. Osteogenic sarcoma
D: Osteogenic sarcoma
Answer: D: Osteogenic sarcoma 
Explanation: 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