聲門上部癌 放射線治療 15年 成績

The Result of Radiation Therapy of Supraglottic Laryngeal Cancer for 15 Years

To assess the result of radiation therapy for fifteen years experience, a total of 125 cases of pathologically proven supraglottic laryngeal cancer had been analyzed according to patient survival retorospectively. All the patients had been treated with radiation therapy in curative aim using Co-60 teletherapy machine. The results are as follows; 1. According to AJCC staging, five year survival rate was 58.3% in stage Ⅰ, 44.4% in Ⅱ,31.8% in Ⅲ, and 28.6% in Ⅳ. 2. According to T-staging, five year survival rate was 57.1% in T1, 40.5% in T2, 34.0% in T3, and 19.0% in T4. 3. According to N staging, five year survival rate was 43.5% in negative node group and 26.8% in positive node group. 4. According to the histologic grade, the better in differentiation, the more in number of cases and the better in prognosis. 5. In summary, five year actuarial survival rate was 37.3% and ten year surrival rate was 34.2%, and ten year survivors totalled 16 cases.