Fig. 1
From: Long-term clinical course and outcomes of immunoglobulin G4-related lung disease
Radiologic subtypes of IgG4-RLD. a Alveolar consolidative type, distinguished by airspace filling opacities obscuring vasculature in a segmental or lobar distribution; b Solid nodular type, characterized by a lung nodule or mass; c Bronchovascular type, characterized by a thickening of bronchovascular bundle and interlobular septa; d Alveolar interstitial type, showing reticulation, diffuse GGO, and honeycombing; e Round ground glass opacity type, showing multiple round-shaped GGO lesions