This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Radiology, Subject name: Radiology
Necrotic nodules in lung are seen in- 
Select and explain. 
A. TB, B. Sarcoidosis, C. RA, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Necrotic nodules in lung are seen in Infective causes: TB, histoplasmosis, syphilis, coccidiomycosis, Cat's scratch disease Non- Infective causes: Wegner's granulomatosis, Sarcoidosis, hyalinizing granuloma, idiopathic bronchocentric granulomatosis, RA Non-Necrotic lesion/ Non cavitating lesion: Pulmonary Hamaoma: Popcorn Calcifications