RATIONALE: Endoscopic surgery is a less invasive type of surgery for laryngeal cancer and may have fewer side effects and improve recovery. Radiation therapy uses high-energy x-rays to kill tumor cells. It is not yet known whether endoscopic surgery is more effective than radiation therapy in treating laryngeal cancer of the glottis. PURPOSE: This randomized phase II trial is studying endoscopic surgery to see how well it works compared with radiation therapy in treating patients with stage 0, stage I, or stage II laryngeal cancer of the glottis.
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