Invasive aspergillosis presenting as hilar masses with stenosis of bronchus: A case report

Figure 3 Histological and microbiological evidence of fungal infection. A: Fungal elements showing the 45° branching hyphae within biopsies under bronchoscopy (hematoxylin–eosin stain, 400×); B: Periodic Acid-Schiff staining was positive (400×); C: Grocott staining was positive (400×); D: Fungal fluorescence staining of bronchial membrane brushing sample done on 2019-3-26 revealed branching septate hyphae.