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Prevalence and clinical profile of fungal rhinosinusitis
Sandeep Suresh1, Dayanand Arumugam, George Zacharias
1Department of Otorhinolaryngology, PSG Institute of Medical Sciences & Research, Coimbatore, Tamil Nadu, India.
Background:
There are only a few landmark studies from the Indian subcontinent on fungal rhinosinusitis. The lack of awareness among clinicians regarding the varying clinical presentations of fungal rhinosinusitis prompted us to undertake this study.
Objective:
To determine the prevalence, etiologic basis, clinical features, radiologic features, and microscopic features of fungal rhinosinusitis, and to evaluate the various treatment modalities available.
Methods:
This was a prospective study in which evaluation of 100 patients with chronic rhinosinusitis was done. Specimens collected were subjected to both microbiology and pathologic examination; data collected, including clinical and radiologic features, were analyzed by the Pearson χ(2) test and Fisher's exact test.
Results:
The prevalence of fungal rhinosinusitis in our study was 30% (n = 30). Mucor was the most commonly isolated species (n = 15 [50%]) of fungus. Pathologic examination had a higher sensitivity (76.67%) compared with microbiology tests (50%) in the diagnosis of fungal rhinosinusitis. Fungus ball (n = 14 [46.6%]) was the most prevalent entity in the spectrum of fungal rhinosinusitis. Forty percent of cases (n = 12) were of invasive fungal rhinosinusitis. The prevalence of fungal rhinosinusitis was higher among individuals who were immunocompetent (n = 17 [56.6%]). Of patients who were immunocompromised, 84.6% (n = 11) had mucormycosis.
Conclusions:
Unilateral involvement of paranasal sinuses was more in favor of fungal etiology. Complications were more common in fungal rhinosinusitis caused by Mucor species. Mucormycosis, a rare clinical entity, in subjects who were immunocompetent, had a high prevalence in our study.
Insights
Fungal rhinosinusitis affects 30% of patients, with Mucor being the most common cause. Pathologic examination is more sensitive than microbiology for diagnosis, and unilateral sinus involvement suggests fungal etiology.
Area of Science:
- Otolaryngology
- Mycology
- Infectious Diseases
Background:
- Limited landmark studies on fungal rhinosinusitis in the Indian subcontinent exist.
- Clinician awareness of diverse fungal rhinosinusitis presentations is low.
Purpose of the Study:
- Determine the prevalence and etiology of fungal rhinosinusitis.
- Characterize clinical, radiologic, and microscopic features.
- Evaluate treatment modalities.
Main Methods:
- Prospective evaluation of 100 chronic rhinosinusitis patients.
- Microbiology and pathology examination of specimens.
- Statistical analysis using Pearson chi-squared and Fisher's exact tests.
Main Results:
- Prevalence of fungal rhinosinusitis was 30% (30/100 patients).
- Mucor was the most common isolate (50%).
- Pathology (76.67%) showed higher sensitivity than microbiology (50%) for diagnosis.
- Fungus ball (46.6%) and invasive fungal rhinosinusitis (40%) were prevalent.
- Higher prevalence in immunocompetent individuals (56.6%).
Conclusions:
- Unilateral paranasal sinus involvement suggests fungal etiology.
- Mucor species infections were associated with more complications.
- Mucormycosis occurred frequently in immunocompetent individuals in this study.
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