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Microbiota of the Respiratory Tract

The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...
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[Fungal rhinosinusitis - still unsolved problem].

Katarzyna Dąbrowska1, Zbigniew Kozłowski, Tomasz Durko

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Fungi are implicated in chronic rhinosinusitis (CRS). This study found fungi in only 3 of 338 patients undergoing sinus surgery, highlighting diagnostic challenges for fungal rhinosinusitis.

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Area of Science:

  • Otolaryngology
  • Mycology
  • Pathology

Background:

  • Chronic rhinosinusitis (CRS) is a prevalent inflammatory condition of the nasal passages and sinuses.
  • Fungal infections are increasingly recognized as potential contributors to specific CRS subtypes.
  • Current classification, diagnosis, and treatment strategies for fungal rhinosinusitis remain under discussion.

Observation:

  • A study reviewed 338 patients who underwent endoscopic sinus surgery for CRS between 2009 and 2011.
  • Histopathological examination identified fungal presence in only three patients.
  • Three distinct cases of fungal rhinosinusitis were detailed: fungal ball of the sphenoid sinus, fungal ball of the maxillary sinus, and non-invasive fungal rhinosinusitis.

Findings:

  • The study observed a low incidence of fungal presence (3/338) via histopathology in patients undergoing surgery for CRS.
  • Case reports illustrated varied presentations of fungal rhinosinusitis, including fungal balls and non-invasive forms.
  • The authors note that updated diagnostic standards and sensitive fungal detection techniques may lead to higher reported rates of fungal rhinosinusitis.

Implications:

  • The findings underscore the challenges in diagnosing fungal rhinosinusitis, suggesting current methods may underestimate its prevalence.
  • Further research into advanced diagnostic techniques is warranted to accurately identify fungal involvement in CRS.
  • Improved diagnostic accuracy could lead to more targeted and effective treatment strategies for patients with fungal rhinosinusitis.