Diagnostic utility of videostroboscopy in hoarseness disorders. A hospital-based cross-sectional study in a tertiary care hospital in Telangana.
DOI:
https://doi.org/10.51168/sjhrafrica.v6i12.2413Keywords:
hoarseness, dysphonia, videostroboscopy, laryngostroboscopy, vocal cord lesions, mucosal waveAbstract
Background
Hoarseness (dysphonia) is a common otolaryngology presentation that affects communication, work efficiency and quality of life.
Objectives
To determine the extent to which videostroboscopy refines diagnosis in patients presenting with hoarseness and to document the additional diagnostic information obtained beyond initial indirect/video laryngoscopy.
Methods
A hospital-based observational study was conducted in a tertiary ENT centre among 147 patients presenting with hoarseness. After a structured clinical history and routine laryngeal examination, videostroboscopy was performed to assess glottic closure, mucosal wave characteristics, lesion morphology, vibratory symmetry and vocal fold mobility. Diagnoses recorded before stroboscopy were compared descriptively with diagnoses after stroboscopic evaluation to identify diagnostic shifts and newly detected abnormalities, including among patients initially labelled as having no abnormality detected.
Results
A total of 60 patients with persistent hoarseness were evaluated. Most participants were male (38, 63.3%), while females accounted for 22 (36.7%), yielding a male-to-female ratio of 1.7:1. The most affected age group was 31–50 years (36.7%). Videostroboscopy showed vocal cord nodules in 18 cases (30.0%), vocal cord polyps in 12 (20.0%), chronic laryngitis in 10 (16.7%), vocal cord cysts in 8 (13.3%), early glottic carcinoma in 6 (10.0%), and functional dysphonia in 6 (10.0%). It detected mucosal wave abnormalities in 48 patients (80.0%) and asymmetric vocal fold vibration in 42 (70.0%). Compared with conventional laryngoscopy, videostroboscopy provided additional diagnostic information in 21 cases (35.0%). Its diagnostic yield was significantly higher for subtle mucosal lesions and vibratory abnormalities (p < 0.05).
Conclusion
Videostroboscopy enhances diagnostic precision in hoarseness by revealing clinically meaningful vibratory abnormalities and by distinguishing visually similar lesions through mucosal-wave and stiffness assessment.
Recommendations
Videostroboscopy should be integrated into routine evaluation of persistent or unexplained hoarseness, professional voice users, and suspected epithelial lesions to support early detection, appropriate triage and tailored therapy.
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