This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
Necrotic lung nodules on chest Xray are seen in 
Select and explain. 
A. TB, B. RA, C. Sarcoidosis, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Necrobiotic pulmonary nodules are sterile cavitating lung nodules associated with inflammatory bowel disease and rheumatoid ahritis Histologically, necrobiotic nodules consist of a core of fibrinoid necrosis and sterile aggregate of numerous epithelioid histiocytes arranged in indistinct nodules with an infiltrate of lymphocytes, plasma cells and multinucleated giant cells.(Ref: Chapman and Nakielny's Aids to Radiological Differential Diagnosis 6thEtd, page no.85)