喉頭癌の現況

Abstract

The incidence of laryngeal carcinoma in Aichi prefecture was studied.The patients consisted of 477 men,28 women who were investig a ted during the past 5 years in cooperation with 15 main hospitals in Aichi prefecture.The incidence of laryngeal carcinoma was 1.60 per 100.000 person-years (3.02in men and 0.18 in women). There were 344 cases of glottic type,116 of the supraglottic, and 23 of the subglottic type. Metastasis in the neck was observed in 59.4% with supraglottic type, and 30.3% with the subglottic type.Pathological and clinical studies on 198 cases of laryngeal c arcinoma were investigated in our clinic during the past 10 years. There were 145 cases of glottic,36cases of supraglottic, and 13 cases of subglottic type. According to the T-classification, there were 61 cases in Ti,68 in T2,47 in T3 and 18 in the T4 group.T1 and T2 groups mainly received radiation treatment (60G y), T3 and T4 groups were treated by total laryngestomy with neck desection, and some patients (31 cases)with radio-resistance tumors among Ti, T2 groups underwent partial laryngectomy and reconstruction.Recently, CO2 Laser-microlaryngosurgery for carcinoma was applied for maintaining laryngeal functions. Among these patients, the three and five year survival rates were 74.4% and 68.8% respectively.