Abstract
A carbon dioxide laser surgery was applied for treatments of various laryngeal diseases including cancer. The application of the laser surgery to treating cancer was classified into the following three groups: 1. removal of tumor with laser alone, 2. reduction of tumor with laser and the postoperative irradiation, 3. removal of the residual tumors after irradiation. No major complications or operative morbidity occured. Moreover, the postoperative phonatory function was examined in ten cases with glottic canceer. They retained sufficient phonatory function for their social activities.