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: Medicine
The interstitial lung disease (ILD) showing granulomas on lung biopsy is 
Select and explain. 
A. Usual interstitial pneumonitis, B. Sarcoidosis, C. Diffuse alveolar damage, D. Desquamative interstitial pneumonia
B: Sarcoidosis
Answer: B: Sarcoidosis 
Explanation: Sarcoidosis is an inflammatory disease characterised by the presence of noncaseating granulomas.The granuloma is the pathologic hallmark of sarcoidosis. Desquamative interstitial pneumonia Is characterised by extensive accumulation of macrophages in intraalveolar spaces with minimal interstitial fibrosis.Granulomas are not formed in usual interstitial pneumonitis and diffuse alveolar damage. Reference:Harrison's Medicine-18th edition,page no:2805,2806,2167.