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J Korean Soc Ther Radiol > Volume 13(4); 1995 > Article
Journal of the Korean Society for Therapeutic Radiology 1995;13(4): 303-310.
Definitive Radiotherapy of Non-Small Cell Lung Cancer
Jong Young Lee, Kyung Ran Park
Department of Radiation Oncology, Yonsei university, Wonju College of Medicine, Wonju, Korea.
The effect of dose escalation of up to 6500 cGy on local control and survival was investigated in locally advanced non-small cell lung cancer.
Ninety eight patients with biopsy-proven unresectable non-small cell lung cancer without distant metastases or medically inoperable patients with lower-stage were treated with definitive radiotherapy alone. Group A were treated by thoracic irradiation, 6000 cGy or less in total tumor dose with daily fractions of 180 to 200 cGy: and group B was treated with 6500 cGy of same daily fractions.
The actuarial overall survival rate for the entire group was 54% at 1 year, 26.6% at 2 years and 16.4% at 3 years with a median survival time of 13 months. Statistically significant prognostic factors that affect survival rate were stage and N-stage. However, no improvement in local control and survival has been seen with higher dose radiotherapy(group B).
Dose escalation of up to 6500 cGy was no effect on local control and survival rate. To increase the survival rate of non-small cell lung cancer hyperfractionated radiotherapy or concurrent chemoradiotherapy should be considered.
Key Words: Non-small cell lung cancer, Radiotherapy
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