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KMID : 0361020000430040411
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Korean Journal of Otolaryngology - Head and Neck Surgery
2000 Volume.43 No. 4 p.411 ~ p.415
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The Efficacy of Voice and Stroboscopic Analysis in Diagnosis of Vocal Cyst
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Nam Soon-Yuhl
Song Yong-Jin
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Abstract
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Background and Objectives : The purpose of this study is to describe the objective features of vocal
cysts and to assess the ability to differentiate vocal cysts from other vocal cord lesions on the basis of
voice and stroboscopic analyses. We hope that present study will contribute toward improving the
pre-operative diagnosis rate.
Materials and Method : The voice analysis was pre-and post-operatively in 12 vocal cyst patients, and
the resulting data was compared with those of 12 vocal polyp patients.
Results : In pre-operative voice analyses, fundamental frequency, jitter, shimmer, noise to harmonic ratio
were significantly decreased. In stroboscopic findings, mucosal waves were absent or diminished 100% in
the vocal cyst patients. Acoustic parameters of vocal cyst patients, however, were not significantly
different from those of vocal polyp patients. Post-operative voice analyses and all acoustic parameters
were improved. Pre-operative diagnosis rate was 75.0% when voice and stroboscopic examinations were
performed, but 42.9% when voice and stroboscopic examination were not performed.
Conclusion : Vocal cysts show absent ordecreased mucosal waves, but show similar acoustic values to
other vocal cord lesions. This study finds that voice analysis and stroboscopic examinations are valuable
tools in the diagnosis of vocal cord cysts.
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KEYWORD
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Vocal cyst, Voice analysis, Stroboscope findings
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