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  • Title: [Prognosis of locally advanced non small cell lung cancer treated with three dimentional conformal radiotherapy].
    Author: Zhu XZ, Wang LH, Ou GF, Zhou ZM, Chen DF, Xiao ZF, Feng QF, Zhang HX, Wang M, Yin WB.
    Journal: Zhonghua Zhong Liu Za Zhi; 2007 Oct; 29(10):748-53. PubMed ID: 18396686.
    Abstract:
    OBJECTIVE: To summarize our experience and evaluate the prognostic factors of locally advanced non small cell lung cancer (LA-NSCLC) treated with three dimentional conformal radiotherapy (3D-CRT). METHODS: 118 patients with stage IIImA/IIIB non small cell lung cancer were treated with 3D-CRT from Nov. 2001 to Mar. 2005. 113 patients with complete clinical data were eligible for analysis, 45 of them received radiotherapy alone; 39 were treated by concurrent chemoradiation with paclitaxol plus carboplatin in 32 patients and topotecan in 7 patients, and 29 by sequential chemoradiation with platinum-based regiment in most of them. The dose of radiation for the thoracic field ranged from 26 Gy to 75 Gy with a median dose of 60 Gy. GTV and PTV were collected from the 3D treatment plans in 79 and 101 patients, respectively. Overall survival (OS) was calculated using the Kaplan-Meier method. Comparisons among the curves were made using a two-tailed long-rank test. The Cox model was used for multivariate analysis. RESULTS: The 1-, 2- and 3-year overall survival rate was 60.7%, 31.6% and 22.4%, respectively, with a median survival time of 17 months. In univariate analysis, the following characteristics were significantly associated with longer survival: absence of chest pain, good karnofsky performance status (KPS), albumin > 4.2 g/L, hemoglobin > or = 140 g/L (male) or 130 g/L (female), response to radiotherapy and GTV < 100 cm3. However, multivariate analysis revealed that only good KPS was an independent risk factor predicting the survival. CONCLUSION: Three-dimensional conformal radiotherapy is effective in the treatment of locally advanced non-small cell lung cancer with acceptable complications. Karnofsky performance status is the only independent prognositic factor.
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