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논문 기본 정보

자료유형
학술저널
저자정보
Jung, Jinhong (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Choi, Wonsik (Department of Radiation Oncology, Gangneung Asan Hospital) Ahn, Seung Do (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Park, Jin Hong (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Kim, Su Ssan (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Kim, Young Seok (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Yoon, Sang Min (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Song, Si Yeol (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Lee, Sang-Wook (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Kim, Jong Hoon (Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine) Choi, Eun Kyung (Department of Radiation Oncology, Asan Medical Center, University o)
저널정보
대한방사선종양학회 Radiation oncology journal : ROJ Radiation oncology journal : ROJ 제30권 제4호
발행연도
2012.1
수록면
158 - 164 (7page)

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Purpose: To evaluated the patterns of failure, survival rate, treatment-related toxicity and prognostic factors in postoperative radiotherapy of patients with ependymoma. Materials and Methods: Thirty patients who underwent surgery and postoperative radiotherapy for ependymoma between the period of June 1994 and June 2008 were reviewed retrospectively. The age of patients ranged from 21 months to 66 years (median, 19 years). Seventeen patients had grade II ependymoma, and 13 had grade III anaplastic ependymoma according to the World Health Organization grading system. The postoperative irradiation was performed with 4 or 6 MV photon beam with median dose of 52.8 Gy (range, 45 to 63 Gy), and radiation field including 2 cm beyond the preoperative tumor volume. Median follow-up period was 51 months (range, 12 to 172 months). Results: Fourteen out of 30 (46.7%) patients experienced recurrence, and 12 of those died. Among those 14 patients who experienced recurrence, 11 were in-field and 3 were out-of-field recurrence. The 5-year overall survival (OS) and progression-free survival (PFS) rates were 66.7% and 56.1%, respectively. On univariate analysis, tumor grade was a statistically significant prognostic factor for OS and PFS. There were two complications after surgery and postoperative radiotherapy, including short stature and facial palsy on the left side. Conclusion: We observed good survival rates, and histologic grade was a prognostic factor affecting the OS and PFS. Almost all recurrence occurred in primary tumor site, thus we suggest further evaluation on intensity-modulated radiotherapy or stereotatic radiosurgery for high-risk patients such as who have anaplastic ependymoma.

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