Scedosporium/Pseudallescheria Infections

Anil A. Panackal, Kieren A. Marr

Research output: Contribution to journalReview articlepeer-review


The genus Scedosporium comprises a group of filamentous fungi found ubiquitously in the environment. The two major human pathogens within this genus are S. apiospermum-the asexual state of Pseudallescheria boydii - and S. prolificans. Both histologically resemble Aspergillus species, with hyphae that are septated and branching at acute angles. Although Scedosporium infections can occur in immunocompetent persons, the overall incidence has increased over the last decade as a consequence of improved diagnostics and a growing immunosuppressed population (e.g., transplant, malignancy, acquired immunodeficiency syndrome). These organisms can cause systemic infection in immunocompromised hosts manifested as sinopulmonary, central nervous system, osteoarticular, ocular, endovascular, and lymphocutaneous disease. Dissemination may occur hematogenously or contiguously, with high associated mortality (>75%). Scedosporium species are known to be largely resistant to traditional antifungals such as amphotericin B; however, treatment with newer triazoles, such as voriconazole, appears to be more efficacious.

Original languageEnglish (US)
Pages (from-to)171-181
Number of pages11
JournalSeminars in Respiratory and Critical Care Medicine
Issue number2
StatePublished - Apr 2004
Externally publishedYes


  • Annellides
  • Emerging opportunistic infections
  • Hyphomycoses
  • Multiantifungal drug resistance
  • Scedosporium

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine


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