声門癌のTlaに対するレーザー手術後の発声機能 : 放射線治療後との比較

概要

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The phonatory function following laser surgery for glottic Tla carcinomas was investigated with 15 subjects. It was compared with the function following radiotherapy studied in 14 subjects. The results are summarized as follows: 1) The occurence of a slight or moderate degree of rough and/or breathy hoareness was more frequent in laser surgery, especially for extensive removals, than in radiotherapy. 2) An impaired phonatory efficiency resulted from laser surgery a little more frequently than from radiotherapy. 3) Following laser surgery, the amplitude of vocal fold vibration was small or zero and there was little mucosal wave during vibration, indicating that the normal vocal fold tissue was replaced with firm scar tissue. 4) An incomplete glottal closure during vibration was found more frequently after laser surgery than after radiotherapy. 5) There were no significant differences in maximum phonation time, mean airflow rate, fundamental frequency range of phonation and intensity range of phonation between laser surgery and radiotherapy.
社団法人日本耳鼻咽喉科学会の論文