Abstract
Non-infectious granulomatous lung diseases represent a group of disorders with relatively
non-specific clinical history and imaging findings. Following pathologies are enlisted,
(1) Inflammatory: sarcoidosis and necrotizing sarcoid granulomatosis (NSG); (2) Pulmonary
lymphoid lesions: lymphomatoid granulomatosis (LYG) and granulomatous-lymphocytic
interstitial lung disease (GLILD); (3) Aspiration/exposure: aspiration pneumonia,
talcosis, berylliosis, and hypersensitivity pneumonitis (HP); (4) Vasculitis: granulomatosis
with polyangiitis and eosinophilic GPA (EGPA) (formerly called as Churg-Strauss syndrome);
and (5) Collagen vascular disorders: rheumatoid lung nodules. Role of radiologist
is to narrow the diagnosis combining the imaging findings with clinical findings thus
following a multidisciplinary approach.
Keywords
ground glass opacity - halo sign - reverse atoll sign - cysts
