Histologic features of granulomatous-lymphocytic interstitial lung disease (GLILD).
(A) Lymphocytic interstitial pneumonitis. Diffuse, lymphocytic interstitial infiltrates obliterating the alveolar spaces in some areas (100×).
(B) Follicular bronchiolitis. Nodular, lymphoid peribronchiolar aggregates (100×).
(C) Non-necrotizing granuloma with multinucleated giant cells (arrow; 200×). Hematoxylin and eosin staining.