Practical Approach to the Pathologic Diagnosis of Mixed Filamentous Fungal Infections in Burn Wounds: A Case Series

Abstract

Abstract Introduction/Objective Opportunistic infections by fungi are a major source of morbidity and mortality in patients suffering from extensive burn wounds. Here we review a series of cases of infections by multiple fungi in burn wounds as diagnosed by histopathology and outline the key features for the pathologist to include in the report. Methods/Case Report Biopsies from patients with more than one fungal species identified in the laboratory in a concurrent culture or by PCR were included in this study. Three cases are presented with multiple fungi identified. Each case had yeast and at least one different hyaline mold species present on pathology; two cases additionally had mucormycetes present, with angioinvasion in one case. All organisms requiried microbiologic cultures and variably required molecular testing for full identification. Results (if a Case Study enter NA) N/A Conclusion Pathologists should be aware of the possibility of infection by multiple fungal species in burn wounds. Fungal morphology in tissue sections should allow for detection and distinction of mucormyctes and other hyaline molds. Histopathologic correlation with culture and/or PCR results is essential to distinguish potential contaminants from true infection.