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Journal of Korean Neurosurgical Society > Volume 20(12); 1991 > Article
Journal of Korean Neurosurgical Society 1991;20(12): 1059-1068.
A Trial of Hyperfractionated Radiotherapy in Supratentorial Gliomas.
Seog Won Cheong, Han Kyu Kim, Young Soon Hwang, Hwa Dong Lee, Ha Yong Yum
1Departments of Neurosurgery, Kosin Medical College, Busan, Korea.
2Departments of Therapeutic Radiation, Kosin Medical College, Busan, Korea.
ABSTRACT
Fractionation dose and number have been known as radiation factor affecting the radiation complication and the effectiveness in radiotherapy for brain tumors. In this study hyperfractionation technique with 115cGy/fractioin 2 fractions daily 5days/wk, upto 5750-6900cGy to partial brain volume was compared with conventional fractionation technique with daily 200cGy/fraction 5 fraction/wk, upto 5400-6000cGy, in regarding to the effectiveness of hyperfractionated radiotherapy and eraly and later radiation reavtion. The survival period was longer in hyperfractionated irradiated group particularly if the tumors were located in the posterior portion of brain, however there was no singificant statistics due to small number of patients. Mean survival period for glioblastoma multiforme was 11.8 months in hyperfractionated group vs 8.7 months in conventional fractionated group and for high grade astrocytoma 36month in hyperfractionated group, but in conventional fractionated group all was died in 18 months. Acute radiation reaction occurred less frequently in hyperfractionated group, 15.8% vs 47.8% in conventional fractionated group(p<0.024). Alopeci was developed in 31.6% of the hyperfractionated group vs 82.6% of the conventional fractionated group(p<0.0031). One case of later radiation necrosis in cancer region was suspected in the hyperfractionated group but we has been in a dilemma for confirmatory diagnosis in present available diagnostic technique. The hyperfractionated irradiation technique was proven to be superior to conventional fractionated technique regarding the radiation reaction and the effectiveness of the treatment.
Key Words: Radiation therapy; Hyperfractionated radiotherapy; Conventional radiotherapy; Supratentorial gliomas
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