Abstract
Carcinoma of the base of tongue, laryngeal carcinoma and hypopharyngeal carcinoma exist in larynx or near place. Therefore, on the occasion of resection of these carcinomas, preservation of larynx is very difficult because of narrow surgical free margin and postoperative misswallowing. But, the combination of new method of surgical approach, conservative resection, new reconstructive surgery, and rehabilitation of speech and swallowing makes the preservation of larynx in many cases though selective. The rate of larynx-preservation by conservative surgical procedure is higher than that by radiotherapy, moreover the local control rate of these carcinomas is maintained as high as that by wide-resection and radical surgical procedure.
