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Tissue eosinophilia in chronic sinusitis: quantification techniques.

N Bhattacharyya1, D K Vyas, F P Fechner

  • 1Division of Otolaryngology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.

Archives of Otolaryngology--Head & Neck Surgery
|September 15, 2001
PubMed
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A new method reliably quantifies tissue eosinophilia in sinus mucosa for chronic rhinosinusitis patients. This eosinophil quantification shows a moderate correlation with computed tomography scan staging.

Area of Science:

  • Otorhinolaryngology
  • Pathology
  • Medical Imaging

Background:

  • Chronic rhinosinusitis (CRS) is often associated with tissue eosinophilia.
  • Accurate quantification of eosinophils is crucial for understanding CRS.
  • Current methods for assessing tissue eosinophilia may lack standardization.

Purpose of the Study:

  • To evaluate the reliability and validity of a novel systematic counting method for quantifying tissue eosinophilia in sinus mucosa.
  • To assess the correlation between quantified tissue eosinophilia and computed tomography (CT) staging of disease severity.

Main Methods:

  • Prospective cohort study involving pathology slides from 65 patients with CRS undergoing endoscopic sinus surgery.
  • Two independent reviewers quantified tissue eosinophilia using a systematic counting method.

Related Experiment Videos

  • Intrarater, interrater, and intrapatient reliability were assessed.
  • Correlation between eosinophil density and CT scan stage was analyzed.

    • Main Results:

    • The proposed quantification method demonstrated strong intrarater (r ≥ 0.91) and interrater (r ≥ 0.82) reliability.
    • A moderate positive correlation was observed between tissue eosinophilia and CT scan stage (Spearman rho = 0.62).
    • Eosinophils were present in 82% of the histopathologic samples analyzed.

    Conclusions:

    • The systematic method for quantifying sinus mucosa tissue eosinophilia is reliable and valid.
    • Tissue eosinophilia in CRS shows a significant correlation with disease severity as assessed by CT staging.