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RGB Measurements From Endoscopic Photography as a New and Objective Diagnostic Method for Chronic Tonsillitis
Alper Yenigun1, Remzi Dogan1, Orhan Ozturan1
1Bezmialem Vakif University, Faculty of Medicine, Department of Otorhinolaryngology, Adnan Menderes Bulvarı Vatan Caddesi 34093, Fatih, İstanbul, Turkey.
Insights
Digital photography using Red/green/blue (RGB) values can help diagnose chronic tonsillitis. This objective method shows significant differences in RGB values for active tonsillitis cases.
Area of Science:
- Otolaryngology
- Medical Imaging
- Diagnostic Technologies
Background:
- Chronic tonsillitis is a common condition requiring accurate diagnosis.
- Current diagnostic methods for chronic tonsillitis often rely on subjective assessments.
Purpose of the Study:
- To evaluate the diagnostic utility of digital photographic assessment using Red/green/blue (RGB) values for chronic tonsillitis.
- To determine if RGB measurements can objectively identify hyperemia in the anterior pillars.
Main Methods:
- Three pediatric cohorts were studied: active chronic tonsillitis, post-tonsillectomy (3 months), and healthy controls.
- Endoscopic photography of the oropharyngeal region was performed.
- Red/green/blue (RGB) values of specific oropharyngeal points were quantitatively measured.
Main Results:
- Active chronic tonsillitis cases showed significantly higher RGB values compared to post-tonsillectomy and control groups.
- No significant RGB value differences were observed between the post-tonsillectomy and control groups.
- RGB values significantly decreased in the post-tonsillectomy group, indicating resolution of hyperemia.
- The RGB test demonstrated high diagnostic performance with 80% sensitivity and 90% specificity.
Conclusions:
- Digital photographic assessment using RGB values offers an objective, inexpensive, and simple method for diagnosing chronic tonsillitis.
- This technique can provide corroborative evidence of hyperemia, complementing subjective clinical evaluations.
Purpose:
This study assessed the diagnostic role of a digital photographic assessment of chronic tonsillitis. This study was performed at a tertiary referral center.
Methods:
Three cohorts of children were studied based on their diagnoses: current chronic tonsillitis (before tonsillectomy), previous chronic tonsillitis (3 months after tonsillectomy), and healthy children (control group). Oropharyngeal regions of all subjects were examined and photographed endoscopically. Red/green/blue (RGB) values of particular oropharyngeal points were then measured.
Findings:
The current chronic tonsillitis group differed significantly from the other 2 groups. The RGB values of the current chronic tonsillitis group were significantly higher than those of the previous chronic tonsillitis group (3 months after tonsillectomy) and the control group (P = 0.018 (red), P = 0.024 (green), and P = 0.004 (blue)). The RGB values did not differ significantly between the previous chronic tonsillitis group and the control group (P = 0.684 [red], P = 0.890 [green], and P = 0.672 [blue]). The RGB values of the previous chronic tonsillitis group decreased significantly 3 months after tonsillectomy (P = 0.015 [red], P = 0.033 [green], and P = 0.001 [blue]). Sensitivity was 80%, specificity was 90%, the positive predictive value was 59%, the negative predictive value was 96%, and the general power of the test was 88.6% regarding the power and competence of the RGB test in the diagnosis of chronic tonsillitis.
Implications:
Measuring RGB values may be an inexpensive and simple way to quickly provide objective and corroborative information on hyperemia of the anterior pillars in diagnosing chronic tonsillitis in conjunction with subjective methods.
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