ILD of Known Cause - Differential Diagnosis Exposure: • Occupational: Asbestosis, Silicosis, Hypersensitivity, Pneumonitis • Treatment Related: Radiation, Methotrexate, Amiodarone, Nitrofurantoin, Chemotherapeutic Systemic Disease: • Granulomatous DX with Vasculitis: GPA, EGPA • Granulomatous DX: Sarcoidosis • Connective Tissue Disease: RA, Scleroderma, Polymyositis, Dermatomyositis, - BWH Medicine Chiefs @BrighamChiefs #ILD #Causes #Differential #Diagnosis #interstitial #lung #disease #pulmonary