Fig. 3.

a Eosinophilic mucin often contains bacterial colonies (Hematoxylin and eosin; original magnification ×100). b Rarely, fungal organisms may be seen in eosinophilic mucin without use of specials stains. Cultures grew Curvularia sp. (Hematoxylin and eosin; original magnification ×100). c Silver stain of fungal organisms in eosinophilic mucin. Cultures grew Alternaria alternata (Grocott stain; original magnification ×200). d In situ hybridization for Aspergillus ribosomal RNA in eosinophilic mucin. Cultures confirmed A. fumigatus. (Nitroblue tetrazolium violet; original magnification ×100)