高度の嗄声を伴つた喉頭軟骨形成異常の1例

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A case of congenital malformation of the laryngeal cartilage was reported.The patient was a 22year old young man who had always been hoarse especially in winter. He was first seen in our clinic of voice and speech division on June 20, 1959.On inspection, his "Adams apple" was hardly recognized in his anterior cervical region. On palpation, there was a defect in the anterior median portion of the thyroid cartilage, so that its wings of both sides were separated from each other.Circus tomogram of his cervical region showed that his laryngeal lumen was elliptic in shape in horizontal plane, while in normal subject the lumen was triangular. This fact also indicated that both wings of the thyroid cartilage did not unite each other in the median line.Laryngoscopic examination revealed chronic laryngitis with atrophy in the vocal ccrds. His hoarseness was considered to be due to chronic laryngitis brought forth by vocal abuse in defective condition of the larynx.Improvement in his voice was obtained after a year of conservative treatment with adrenocortical hormone administered by nebulizer and instillation to the larynx.Further observation must be necessary, since there was no remarkable change in defective condition in his laryngeal cartilage after the treatment.
社団法人日本耳鼻咽喉科学会の論文