Iranian Journal of Otorhinolaryngology

Iranian Journal of Otorhinolaryngology

Quantitative Video fluoroscopic Analysis of Postoperative Swallowing Outcomes in Patients with Oral and Oropharyngeal Cancer

Document Type : Original

Authors
Quang Xuan Ly 1
Duc Tan Vo 2
Chau Le Minh Tran 3
Loan Thi Hong Nguyen 4
1 Department of Otolaryngology - Head and neck surgery, University Medical Center Ho Chi Minh City Department of Otolaryngology - Head and neck surgery, School of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City Vietnam.
2 Department of Radiology, University Medical Center Ho Chi Minh City Vietnam. Department of Radiology, School of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City Vietnam.
3 Department of Radiology, University Medical Center Ho Chi Minh City Vietnam.
4 Department of Otolaryngology - Head and neck surgery, School of Medicine, University of Medicine and Pharmacy at Ho Chi Minh City Vietnam.
10.22038/ijorl.2025.90978.4039
Abstract
Introduction:
Postoperative dysphagia significantly affects the quality of life of patients with oral and oropharyngeal cancer. We aimed to objectively analyze swallowing function in these patients using quantitative biomechanical indices from videofluoroscopic swallowing studies (VFSS) as well as to identify independent predictors of key swallowing outcomes.
Materials and Methods:
We included 60 patients with postoperative oral and oropharyngeal cancers. VFSS were performed at 3 months (for patients without adjuvant therapy) or 6–7 months (for patients with adjuvant therapy) to assess swallowing safety (Penetration-Aspiration Scale); post-swallowing pharyngeal residue; and biomechanical functions, including pharyngeal transit time (PTT), laryngeal vestibule closure duration, pharyngoesophageal segment opening duration/dimension, and laryngeal elevation. Generalized linear models (GLMs) were used to identify independent predictors.
Results:
The cohort was predominantly male (78.3%); further, 58.4% of the patients received adjuvant therapy. Thin liquids had the highest penetration and aspiration rates, whereas extremely thick liquids had the lowest rates. The GLM identified sex, adjuvant treatment, and suprahyoid muscle defects as independent predictors of different VFSS parameters. Specifically, adjuvant therapy and sex were associated with a prolonged PTT, while suprahyoid muscle defects were significant predictors of reduced laryngeal elevation.
Conclusion:
Swallowing impairment remains prevalent after surgery for oral and oropharyngeal cancers. VFSS analysis could highlight specific biomechanical deficits; further, we identified predictors of key swallowing outcomes, including sex, adjuvant treatment, and suprahyoid defects.
Keywords
Dysphagia
Oral Cancer
Oropharyngeal Cancer
Videofluoroscopic Swallowing Study (VFSS)
Swallowing Biomechanics
Subjects
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Iranian Journal of Otorhinolaryngology
Volume 38, Issue 1
January and February 2026
Pages 43-53