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Comparison of long-term efficacy between concurrent chemoradiotherapy and intensity-modulated radiotherapy alone for stage Ⅱ nasopharyngeal carcinoma
Sun Xueming, Chen Chunyan, Han Fei, Lu Taixiang
Department of Radiation Oncology,Cancer Center of Sun Yat-Sen University,State Key Laboratory of Oncology in Southern China,Collaborative Innovation Center of Cancer Medicine,Guanggzhou 510060,China (Sun XM,Chen CY,Han F,Lu TX);
Department of Radiation Oncology,Affiliated Tumor Hospital of Zhengzhou University,Henan Province Tumor Hospital,Zhengzhou 450008,China (Sun XM)
Objective To compare the long-term efficacy between intensity-modulated radiotherapy (IMRT) alone and concurrent chemoradiotherapy (CCRT) in the treatment of stage Ⅱ nasopharyngeal carcinoma (NPC) patients. Methods The clinical data of 123 patients with stage Ⅱ NPC were retrospectively analyzed. Eighty-one patients received IMRT alone,and 42 patients received CCRT.The Kaplan-Meier method was used to calculate survival rates,and the log-rank test was used to compare the survival rates. Results The 5-year overall survival (OS),local recurrence-free survival (LRFS),distant metastasis-free survival (DMFS),and progression-free survival (PFS) rates in all patients were 96.7%,94.7%,93.1%,and 87.8%,respectively. There were no significant differences between the patients receiving IMRT alone and CCRT in 5-year OS (98.7% vs.92.9%,P=0.569),LRFS (94.8% vs. 94.5%,P=0.770),DMFS (94.5% vs. 90.2%,P=0.408),and PFS (90.6% vs. 82.2%,P=0.340).For patients with stage T2N1 NPC,the 5-year OS,LRFS,DMFS,and PFS also showed no significant differences between those receiving IMRT alone and CCRT (P=0.929,0.967,0.917,0.492).The incidence rates of neutropenia,leukopenia,and mucositis were significantly higher in patients receiving CCRT than in those receiving IMRT alone (P=0.000,0.000,0.012,0.010),while the incidence of late toxicities was similar between the two groups of patients (P=0.823,0.622,0.113). Conclusions For stage Ⅱ NPC patients treated with IMRT,the addition of concurrent chemotherapy fails to improve the prognosis,and increases the incidence of acute toxicities.
Corresponding Authors:
Lu Taixiang,Email:lutx@mail.sysu.edu.cn
Cite this article:
Sun Xueming,Chen Chunyan,Han Fei et al. Comparison of long-term efficacy between concurrent chemoradiotherapy and intensity-modulated radiotherapy alone for stage Ⅱ nasopharyngeal carcinoma[J]. Chinese Journal of Radiation Oncology, 2017, 26(4): 376-379.
Sun Xueming,Chen Chunyan,Han Fei et al. Comparison of long-term efficacy between concurrent chemoradiotherapy and intensity-modulated radiotherapy alone for stage Ⅱ nasopharyngeal carcinoma[J]. Chinese Journal of Radiation Oncology, 2017, 26(4): 376-379.