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[Histologic studies on otomycosis].

Irina Vennewald1, J Schönlebe, E Klemm

  • 1Hautklinik, Krankenhaus Dresden-Friedrichstadt, Postfach 120706, D-01008 Dresden, Germany.

Mycoses
|June 21, 2002
PubMed
Summary
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Fungi frequently colonize the ear canal and middle ear in immunocompetent patients, particularly those with chronic otitis media. This study identifies common fungal species and links ear inflammation to fungal presence.

Area of Science:

  • Otolaryngology
  • Mycology
  • Infectious Diseases

Background:

  • Fungal infections of the ear, or otomycosis, are primarily documented as mycoses affecting the auditory canal.
  • Understanding fungal colonization in immunocompetent individuals is crucial for effective treatment.

Purpose of the Study:

  • To investigate the prevalence and patterns of fungal colonization in the ears of immunocompetent patients.
  • To identify common fungal species involved in ear infections.
  • To explore the relationship between middle ear conditions and fungal presence.

Main Methods:

  • Prospective examination of 128 patients suspected of otomycosis between 1993 and 2000.
  • Sample collection from the auditory canal, tympanic membrane, and middle ear.

Related Experiment Videos

  • Histological examination of samples from patients with suspected mastoiditis or cholesteatoma.

    • Main Results:

    • Fungi were detected in 54 out of 139 auditory canal samples, 5 tympanic membrane samples, and 5 middle ear samples.
    • Moulds constituted two-thirds and yeasts one-third of the isolated fungi, with Aspergillus niger and Candida parapsilosis being dominant species.
    • Fungal hyphae were observed in the middle ear cavity or cholesteatoma in 4 out of 15 examined patients.
    • Chronic-hyperplastic inflammation with increased mucus production was noted in the middle ear, potentially promoting fungal colonization.

    Conclusions:

    • Fungal colonization is a significant finding in immunocompetent patients with ear conditions, especially chronic otitis media.
    • The middle ear environment, characterized by inflammation and mucus, can facilitate fungal growth.
    • Further research into the role of fungi in chronic ear pathologies is warranted.