Fig. 2From: Invasive pseudomembranous upper airway and tracheal Aspergillosis refractory to systemic antifungal therapy and serial surgical debridement in an Immunocompetent patientTracheal biopsy demonstrating necrotic tissue on (a) HE staining. (b) GMS staining highlights branching fungal hyphae within the tissue specimenBack to article page