1. Histopathology of Malassezia folliculitis.
Histopathology of Malassezia folliculitis. (A) Dilated hair follicle filled with keratinous material and basophilic debris. Shown is a perifollicular inflammatory cell infiltrate with hematoxylin-eosin staining. Original magnification, ×40. (B) Detail of panel A showing hardly recognizable yeast cells in this section in keratinous masses within the infundibular lumen adjacent to the site of wall destruction. Hematoxylin-eosin staining is shown. Original magnification, ×200. (C) Dense perifollicular chronic inflammatory cell infiltrate with amorphous mucinous material in the dilated follicle lumen and PAS stain-positive tiny budding yeasts. PAS staining was used. Original magnification, ×100. (D) Detail of a serial section of the same follicle demonstrating numerous yeast spores within the dilated follicle lumen. PAS staining was used. Original magnification, ×200.
Georgios Gaitanis et al. Clin. Microbiol. Rev. 2012; doi: /CMR