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EVALUATION OF THE TMS CLASSIFICATION ON SINUS CT FROM DECEMBER 2024 TO JUNE 2025 AT EAR NOSE THROAT HOSPITAL OF HO CHI MINH CITY
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Abstract
Background: The TMS classification on CT sinus scans helps assess the risk of anterior skull base injury during endoscopic sinus surgery. Objective: To describe the anatomical features and pathological findings on CT sinus scans and evaluate the TMS (Thailand–Malaysia–Singapore) classification in stratifying the risk of anterior skull base injury. Methods: A descriptive study of 200 patients (400 sides) with sinus disease who underwent CT scans at Ear Nose Throat Hospital of Ho Chi Minh City from December 2024 to June 2025. Results: TMS classification showed Type I in 80%, Type II in 16.8%, and Type III in 3.2%. TMS classification was symmetrical in 77.5% of patients. No statistically significant difference was found in the distribution of TMS by gender or between sides. Conclusion: The TMS classification is an easy-to-apply and useful tool for evaluating the risk of anterior skull base injury during endoscopic sinus surgery.
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Keywords
Endoscopic Sinus Surgery (ESS), TMS classification, skull base, CT sinus scan.
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