Radiation Therapy of Early glottic Cancer / 대한치료방사선과학회지

ABSTRACT

Retrospective analyses were done of 48 patients with early glottic cancer, 31 with T1NOMO and 17 with T2NOMO, who received radiation therapy from March 1979 to August 1984 at Seoul National University Hospital with the prescribed full dosage. The median follow-up period was 67 months (range 34 months~126 months), and the percent follow-up for longer than five years was 85.4% The five-year actuarial overall and recurrence-free survival rates of the whole patient group were 83.2% and 69.4%, respectively. The five-year actuarial overall and recurrence-free survival rates of the T1 group were 87.1% and 76.0%, and those of the T group were 76.5% and 58.2%, respectively. Possible causes of the failures to radiation therapy, the dose-response relationship, association with the second malignant tumors, and some recommendations for better treatment outcome are analyzed and discussed.