Allergic Bronchocentric Granulomatosis. Sections show muscle, lung with acute inflammation and evidence of organisation with early fibrosis. The bronchial wall can be seen with chronic inflammation and many eosinophils.There is a thickened basement membrane. No definite granulomata are seen.
A 53 year old male with fevers, shortness of breath and a progressive left lower lobe infiltrate, he had a previous history of aspergillosis. A percutaneous lung biopsy was done. All sections were stained with haemotoxylin and eosin. No fungal hyphae were seen with silver staining (not shown).