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Chronic maxillary sinusitis associated with the mushroom Schizophyllum commune in a patient with AIDS

J Rosenthal1, R Katz, D B DuBois

  • 1Division of Infectious Diseases, Case Western Reserve University, Cleveland, Ohio.

Insights

Invasive fungal infections from Basidiomycota are rare. This case details a human immunodeficiency virus patient with chronic maxillary sinusitis caused by the mushroom Schizophyllum commune.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Immunology

Background:

  • Invasive infections by Basidiomycota fungi are exceptionally rare in clinical settings.
  • Human immunodeficiency virus (HIV) disease can predispose individuals to opportunistic infections.
  • Chronic maxillary sinusitis requires thorough etiological investigation.

Observation:

  • A patient with HIV disease presented with persistent chronic maxillary sinusitis.
  • Surgical drainage revealed the presence of the mushroom, Schizophyllum commune.
  • Microscopic examination showed septate hyphae invading the maxillary submucosa.

Findings:

  • Isolation and identification of Schizophyllum commune from infected sinus tissue.
  • Histopathological evidence of fungal invasion in the maxillary submucosa.
  • Demonstration of an extremely rare invasive fungal infection in an immunocompromised host.

Implications:

  • Highlights the potential for rare fungal pathogens to cause invasive disease in immunocompromised individuals.
  • Underscores the importance of considering fungal etiologies in complex sinusitis cases, particularly in HIV patients.
  • Contributes to the limited literature on invasive Basidiomycota infections, emphasizing Schizophyllum commune as a potential pathogen.

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