During a ten-year period from 1978 through 1987, 44 patients with T2NOMO glottic cancer were treated with radical radiation therapy at the Yonsei University Medical Center. Forty-two patients had a minimum follow-up of 3 years, and $81\%$ had at least five years of follow-up. Patients were staged according to the AJCC system. Forty-two patients have been analyzed in detail with respect to two variables: the status of vocal cord mobility and the degree of local extension of the disease. Five-year local recurrence free survival rates were as follows: All 42 patients, $53.3\%$ patients with normal vocal cord mobility (n =18), $69.1\%$ versus patients with impaired vocal cord mobility (n=24), $43.4\%$(p<0.05); patients with subglottic extension (n=15), $36.7$ versus patients without subglottic extension (n=29), $61.9\%$ (p<0.05). The most favorable Prognostic group included the patients with normal mobility without subglottic extension (n=14), $83.1\%$. On the basis of this analysis, we confirmed the presence of heterogeneity in T2NOMO glottic cancer This study indicates that further randomized controlled trials are warranted to evaluate.