The surgical specimen of a mass-like opacity in the left lower lobe. Small, loose-formed, non-necrotizing granulomas are seen in the bronchiole and alveolar duct (left) and in the lymph tract just below the pleura (right); no granulomatous vasculitis is seen. The findings are consistent with hypersensitivity pneumonitis with poor drainage of a large amount of granulomas (Elastica van Gieson stain, left ×200, right ×100). Chronic granulomatous disease with pulmonary mass-like opacities secondary to hypersensitivity pneumonitis: a case report. Katsuya Y, Hojo M, Kawai S, Kawai T, Onodera M, Sugiyama H - Journal of medical case reports (2014). Not Altered. CC.