Patient 1. (a) Computed tomography scan of the chest shows a mass and multiple, cystic changes in the left lower lobe. (b) Macroscopic view reveals multi-cystic lesion with partially solid and necrotic area. (c) Microscopically, walls of cysts were lined by pseudostratified columnar epithelium and surrounded by fibromuscular bundles. (d) Inside the necrotic area, aspergillus hyphae are found and confirmed by GMS stain.
Feng et al. Diagnostic Pathology 2012 7:37 doi:10.1186/1746-1596-7-37