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Malassezia furfur Infections
Published online by Cambridge University Press: 21 June 2016
Extract
Malassezia furfur, previously known as Pityrosporum obiculare, is a lipophilic saprophytic yeast that preferentially colonizes the skin of the scalp, chest, and back. Three clinical syndromes have been associated with M furfur infections: intravenous line sepsis associated with lipid infusions; folliculitis, most often in patients with acquired immunodeficiency syndrome (AIDS) and less commonly in steroid-treated patients with diabetes mellitus; and tinea versicolor, a superficial dermatosis seen in healthy young adults. Most cases of M furfur seen in the hospital are AIDS patients with folliculitis and intravenous line sepsis in neonates receiving lipid emulsions.
The genus Malassezia consists of two saprophytic yeast-like organisms: M furfur and Malassezia pachydermatitis. M furfur, predominantly a yeast, is a fastidiously lipophylic member of the normal skin flora in 90% of humans. It is present as filamentous structures in the skin where the organism is associated with tinea versicolor and folliculitis. M pachydermatitis is a yeast most often associated with dogs, where it has been reported to cause otitis externa. Recent reports have implicated this organism in human infections as well.
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- Topics in Clinical Microbiology
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- Copyright © The Society for Healthcare Epidemiology of America 1991
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