The study on importance of three-dimensional radiotherapy for elderly patients with stage ⅠV non-small cell lung cancer
ZHANG Bo*, LU Bing, SU Sheng-fa, HU Yin-xiang, OUYANG Wei-wei, LI Hui-qin, MA Zhu, LONG Jin-hua
*Department of Oncology, Ahshun People Hospittal,Anshun 561000,China Corresponding author:LU Bing,Department of Oncology,Guizhou Province Tumor Hospital;Department of Thoracic Oncology, Affiliated Hospital of Guiyang Medical College; Guiyang 550004,China; Email:lbgymaaaa@sohu.com
Abstract:Objective To evaluate the importance of three-dimensional radiotherapy for elderly patients of stage ⅠV non-small cell lung cancer (NSCLC). Methods Comparing with treatment outcome of ≥65 years 67 patients and<65 years 134 patients using concurrent chemotherapy and thoracic three-dimensional radiotherapy during 2003 to 2010 years. Survival analysis was taken by Kaplan-Meier method. The multivariate prognosis was analyzed by Cox model. Results The follow-up was 97.8%. The percentage of ≥65 years and<65 years patients accepted with concurrent 4-5 cycles chemotherapy were 30% and 55%, and with 42% and 49% patients with radiotherapy ≥63 Gy. The median survival time (MST) were 17 months and 14 months (χ2=0.76,P=0.384) for ≥65 years and<65 years patients accepted with concurrent 4-5 cycles chemotherapy concurrent ≥63 Gy radiotherapy respectively. The MST and 1-, 2-,3-year overall survival rate were 17 months and 8 months,65% and 23%, 30% and 13%, 24% and 9%(χ2=7.90,P=0.005) for whole groups patients treated with chemotherapy concurrent ≥63 Gy and<63 Gy radiotherapy. And the MST of patients ≥63 Gy was significantly longer than those with<63 Gy either concurrent chemotherapy any cycles (χ2=9.54,P=0.023).The MST were 14 months and 8 months (χ2=1.82,P=0.178),17 months and 17 months (χ2=0.47,P=0.492) for ≥65 years and ≥63 Gy radiotherapy patients accepted with concurrent 4-5 cycles and 2-3 cycles chemotherapy concurrent respectively. Multivariate analysis showed local response (β=0.600,P=0.003) and numbers of tumor metastasis (β=0.670,P=0.040) were independent factors for survival. Conclusions For a part of elderly patients of stage Ⅳ NSCLC, concurrent chemotherapy and thoracic three-dimensional radiotherapy can prolong survival time with acceptable toxicity. Perhaps radiotherapy is more important.
ZHANG Bo*,LU Bing,SU Sheng-fa et al. The study on importance of three-dimensional radiotherapy for elderly patients with stage ⅠV non-small cell lung cancer[J]. Chinese Journal of Radiation Oncology, 2012, 21(6): 504-507.
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