TURKISH JOURNAL OF ONCOLOGY 2008 , Vol 23 , Num 1
Radiotherapeutic management of high grade glial tumors and prognostic factors: Metropolitan Hospital experience
Gül ALÇO,1 Şefik İĞDEM,1 Sedat TURKAN,2 Sait OKKAN3
1Metropolitan Hastanesi, Radyasyon Onkolojisi Kliniği, İstanbul, Turkey
2İ. Ü. Cerrahpaşa Tıp Fakültesi, Radyasyon Onkolojisi Anabilim Dalı, İstanbul, Turkey
3İstanbul Bilim Üniversitesi Tıp Fakültesi, Radyasyon Onkolojisi Anabilim Dalı, İstanbul, Turkey
OBJECTIVES
Patients diagnosed with high grade glial tumors and treated in Metropolitan Hospital, were analysed retrospectively to evaluate radiotherapy results and the prognostic factors.

METHODS
One hundred and thirty-eight patients (63 females, 75 males) diagnosed with high grade glial tumors were analysed retrospectively to evaluate radiotherapy results and the prognostic factors. Radiotherapy was given after complete resection on 51 patients and after partial resection on 47 patients. The remaining 40 patients were irradiated after biopsy. Fifty-five patients received concomittant and/or adjuvant chemotherapy.

RESULTS
Median overall survival and progression free survival were 13 and 6 months. One and 2-year survival rates were %55 and %24 respectively. Univariate analysis showed that age (p=0.0021, p=0.0021), histology (p=0.0079, p=0.00001), resection type (p=0.04, p=0.01), Karnofsky Performance Status (KPS) (p=0.00001, p=0.00001) and Recursive Partitioning Analysis (RPA) (p=0.00001, p=0.000001) classification were the significant prognostic factors for the progression-free and overall survival. In multivariate analysis, KPS (p=0.03322), and RPA (p=0.0033) classification were the independent significant prognostic factors for overall and progression free survival respectively.

CONCLUSION
In our series KPS and RPA classification were the most significant prognostic factors for the progression and survival. Keywords : High grade glial tumors; prognostic factors; radiotherapy; survival