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. 2016 Jan-Mar;11(1):79–81. doi: 10.4103/1817-1737.164301

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Copyright: © 2016 Annals of Thoracic Medicine

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

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Transbronchial biopsy (TBB) showing granulomas. H and E, assay ×100 (a), ×200 (b). TBB was mainly characterized by the presence of nonnecrotizing granulomas. Other inflammatory cells were poorly represented, mainly lymphocytes around granulomas. Alveolar septa were overshadowed by granulomatous component. Some central necrosis (b) revealing very active sarcoidosis can be identified. Special stains for fungi (PAS) and mycobacteria resulted negative. Images courtesy of Tironi Andrea MD, Division of Anatomic Pathology, Spedali Civili, Brescia.