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Comparison between Awake Endoscopy and Computed Tomography to Define Lingual Tonsil Hypertrophy
Jessica A Tang1, Gleb Gorelick1, Michael Friedman1,2
11 ChicagoENT: Advanced Center for Specialty Care, Chicago, Illinois, USA.
Summary
Endoscopic lingual tonsil grading correlates with CT measurements of lingual tonsil thickness. Higher grades show significantly greater thickness on CT scans, suggesting a reliable objective measure for hypertrophy.
Area of Science:
- Otolaryngology
- Radiology
- Medical Imaging
Background:
- Lingual tonsil hypertrophy (LTH) can cause upper airway obstruction.
- Objective measurements are needed to complement subjective endoscopic grading.
Purpose of the Study:
- To correlate endoscopic lingual tonsil grade (LTG) with computed tomography (CT) measurements of lingual tonsil thickness (LTT).
Main Methods:
- Retrospective review of 75 patients' CT scans and endoscopic LTG.
- LTT measured on axial and sagittal CT.
- Statistical analysis including ANOVA with Tukey's post hoc test.
Main Results:
- Significant differences in LTT between LTG 1/2 and LTG 3 on axial CT (P < .001).
- Significant differences in LTT between LTG 1/2 and LTG 3 on sagittal CT (P < .001, P = .002).
- Proposed CT cutoff of ~7.5 mm for clinically significant LTH.
Conclusions:
- Endoscopic LTG correlates with objective CT measurements of LTT.
- CT provides a reliable objective assessment for lingual tonsil hypertrophy.
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