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Histologic features of granulomatous-lymphocytic interstitial lung disease. (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.
