[Surgical treatment of well-differentiated thyroid carcinoma with laryngotracheal invasion].

We reviewed 141 cases of well-differentiated thyroid carcinoma with laryngotracheal invasion surgically treated from 1957 through 1984. Of the 141 cases, 68 had the tumor adhesive to the larynx or/and trachea, 66, the tumor invading the cartilage of airway, and 7, the tumor invading into the lumen of airway. 82 cases (33 with microscopically residual tumor, and 26 with grossly residual tumor) underwent total resection. Postoperative radiotherapy was added to the last two groups. The 10-year survival rate was 84.45%, but in Group I, II and III it was 93.94%, 90.68%, and 53.91% respectively. Radiotherapy which was added postoperatively was a positive prognostic factor in improving the survival.