Fontana-Masson-stained tissue from culture-proven mycoses

摘要: Background The Fontana-Masson stain can be used to detect melanin of dematiaceous fungi such as Curvularia lunata and Bipolaris hawaiiensis in tissue. This is often identify that may not have an evident brown color hematoxylin-eosin-stained sections. However, it clear whether hyphae nondematiaceous stained with the procedure. Methods Paraffin sections from culture-proven mycoses caused by species Aspergillus, Candida, Fusarium, Pseudallescheria, Trichosporon, zygomycetes, were Extent intensity its distribution fungal elements tissue evaluated means scale based on Cryptococcus neoformans a positive control. Results Many Aspergillus spp, some all showed strong intensity, whereas other either weak or no staining. Conclusion Fungal than occasionally morphology positively must carefully evaluated, especially when they are hyaline