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자료유형
학술저널
저자정보
Kim, Kyung-Hyun (Department of Neurosurgery, Yonsei University College of Medicine) Park, Yong-Sook (Department of Neurosurgery, Yonsei University College of Medicine) Chang, Jong-Hee (Department of Neurosurgery, Yonsei University College of Medicine) Chang, Jin-Woo (Department of Neurosurgery, Yonsei University College of Medicine) Park, Yong-Gou (Department of Neurosurgery, Yonsei University College of Medicine)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제39권 제2호
발행연도
2006.1
수록면
102 - 108 (7page)

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Objective : The management of diffuse astrocytomas is one of the most controversial areas in clinical neurooncology. There are numerous reviews and editorials outlining the difficulties in the management of these lesions. In this study, we assess the role of Gamma Knife radiosurgery[GKS] for diffuse astrocytomas. Methods : Twenty-three patients with a diffuse astrocytoma were treated with GKS as a primary or adjuvant method from February 1995 to October 2003. The mean marginal dose was $13.6\;[8.5{\sim}17.5]Gy$ and the mean maximal dose was $27.3\;[17.0{\sim}35.0]Gy$. Local control and the pattern of radiologic response were evaluated. The probable factors affecting local control, such as tumor volume, margin dose, previous history of craniotomy or stereotactic biopsy, and the presence or absence of previous radiotherapy were statistically analyzed. The average duration of follow-up was 39.7 [$11.3{\sim}101.5$] months after GKS. Results : Of the 23 lesions treated, 16 lesions [69.6%] were controlled during the follow-up period. The mean progression-free interval was 57.4 months and the 5-year progression-free rate was 68%. Only tumor volume was found to be a statistically significant factor for local control. Smaller tumors were better controlled by GKS; it was significantly effective in tumors with less than $10cm^3$ volume. Conclusion : GKS could be a valuable therapeutic modality both as a primary treatment and as a postoperative adjuvant therapy in some selected cases.

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