<prompt> Granulomatous lung disease is caused by?Hypersensitivity pneumonitisSarcomaBronchogenic carcinomaBronchogenic cyst  <response>: Ans is a i.e. Hypersensitivity pneumonitis Granulomatous lung disease refers a broad group of infectious and well as non infections conditions characterized by formation of granulomas. The spectrum includes :1 Infectiousa Mycobacteriali Pulmonary tuberculosisii Pulmonary non tuberculous mycobacterial infectionb Fungali Pulmonary coccidioidomycosisii Pulmonary cryptococcosisiii Pulmonary histoplasmosisiv Pulmonary blastomycosisv Pulmonary aspergillus infectionsc Parasitici Pulmonary dirofilaria infection2 Non infectiousa Sarcoidosisb Wegener granulomatosisc Churg strauss syndromed Chronic granulomatous disease2e Hypersensitivity pneumonitisf Bronchocentric granulomatosisg Pulmonary manifestations of rheumatoid arthritish Granulomatosis secondary to substancesi Pulmonary talc granulomatosisii Berylliosisiii Granulomatous pneumonitis associated with begi Changes secondary to chronic aspiration pneumonitisj Lymphoproliferativei Lymphocytic interstitial pneumonitisii Lymphomatoid granulomatosisk Pulmonary langerhans cell histiocytosisl Erdheim-chester diseasem Granulomatous lung disease associated with common variable immunodeficiency 