Histological examination (Haematoxylin-eosin staining) of the pulmonary aspergilloma. a) A dilated bronchus filled with necrosed aspergillus hyphae. Histological.

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Histological examination (Haematoxylin-eosin staining) of the pulmonary aspergilloma. a) A dilated bronchus filled with necrosed aspergillus hyphae. Histological examination (Haematoxylin-eosin staining) of the pulmonary aspergilloma. a) A dilated bronchus filled with necrosed aspergillus hyphae. The small airway is apparently connected to the main cavity (top left). b) Partially necrosed masses of hyphae within the cavity and the so-called fungus ball (left). Note the granulation tissue of the cavity wall, consisting of fibroblasts and inflammatory cells that are mainly lymphocytes, plasma cells and eosinophil leukocytes. Scale bars = 100 μm. D. Montani et al. Eur Respir Rev 2010;19:349-351 ©2010 by European Respiratory Society