Effect of radiotherapy dose on prognosis of cervical esophageal squamous cell carcinoma after define concurrent chemoradiotherapy
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摘要:
目的 颈段食管鳞癌(CEC)的根治性放疗剂量存在争议,本研究对接受根治性同步放化疗的CEC患者的疗效进行分析,以期为CEC的放疗剂量提供临床参考。 方法 回顾性分析2013年1月—2021年12月蚌埠医科大学第一附属医院放疗科收治的89例接受调强放疗的颈段食管鳞癌患者资料,根据放疗剂量分成2组,分别为低剂量组(EQD2Gy≤60 Gy,26例)及高剂量组(EQD2Gy>60 Gy,63例)。化疗方案包括以铂类为基础的双药联合和单纯口服替吉奥胶囊。采用Kaplan-Meier法计算局部区域控制(LRC)、无进展生存(PFS)、总生存(OS),log-rank法进行差异性检验及单因素分析,Cox模型分析独立预后因素。 结果 随访至2022年12月底,随访率为100%,中位随访时间为100个月,1、3、5年LRC率分别为76.1%、37.9%、22.4%,PFS率分别为67.4%、30.0%、16.2%,OS率分别为85.4%、47.1%、29.6%。单因素分析显示T分期、N分期、TNM分期和放疗剂量是OS、PFS、LRC的影响因素,多因素分析显示放疗剂量是颈段食管鳞癌0S、PFS、LRC的独立预后因素(P<0.05)。 结论 颈段食管鳞癌采用根治性放化疗时,EQD2Gy>60 Gy显示出更好的生存获益,放疗剂量是OS、PFS、LRC的独立预后因素。 Abstract:Objective The dose of define concurrent chemoradiotherapy for cervical esophageal squamous cell carcinoma(CEC) is controversial. This study analyzed the efficacy of patients with CEC who received define concurrent chemoradiotherapy, hoping to provide a clinical reference for the dose of radiotherapy for CEC. Methods A retrospective analysis was performed on 89 patients with CEC who received intensity-modulated radiotherapy (IMRT) in the Department of Radiotherapy, the First Affiliated Hospital of Bengbu Medical University from January 2013 to December 2021 and were divided into two groups according to radiotherapy dose: a low-dose group (EQD2Gy≤60 Gy) and a high-dose group (EQD2Gy>60 Gy). Chemotherapy regimens include platinum-based dual drug combination or S1 alone. The Kaplan-Meier method was used to calculate loco-regional control (LRC), progression-free survival (PFS), and overall survival (OS). The log-rank method was used to test differences and univariate analysis. The Cox model was used to analyze prognostic factors. Results The follow-up rate was 100% and the median follow-up time was 100 months. The 1-year, 3-year, and 5-year LRC rates were 76.1%, 37.9%, and 22.4%, respectively, and the PFS rates were 67.4%, 30.0%, and 16.2%, respectively. The OS rates were 85.4%, 47.1%, and 29.6%, respectively. Univariate analysis showed that T stage, N stage, TNM stage, and radiotherapy dose were the influencing factors of OS, PFS, and LRC, and radiotherapy dose was the independent prognostic factor of 0S, PFS, and LRC in cervical esophageal squamous cell carcinoma (P < 0.05). Conclusion When cervical esophageal squamous cell carcinoma is treated with define chemoradiotherapy, EQD2Gy>60 Gy showed a better survival benefit, and radiotherapy dose was an independent prognostic factor for OS, PFS, and LRC. -
Key words:
- Esophageal carcinoma /
- Define chemoradiotherapy /
- Prognosis /
- Radiotherapy dose
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表 1 2组CEC患者一般临床资料比较[例(%)]
Table 1. Comparison of general clinical data of the two groups of CEC patients[cases (%)]
项目 EQD2Gy≤60 Gy (n=26) EQD2Gy>60 Gy (n=63) χ2值 P值 性别 0.029 0.886 男性 17(65.4) 40(63.5) 女性 9(34.6) 23(36.5) 年龄(岁) 1.625 0.202 ≤68 11(42.3) 36(57.1) >68 15(57.7) 27(42.9) 吸烟史 1.850 0.667 有 6(23.1) 12(19.0) 无 20(76.9) 51(81.0) 体重下降 0.003 0.954 ≤10% 22(84.6) 53(84.1) >10% 4(15.4) 10(15.9) 肿瘤长度(cm) 0.282 0.595 ≤5 20(76.9) 45(71.4) >5 6(23.1) 18(28.6) cT分期 0.317 0.573 T1~2 14(53.8) 38(60.3) T3~4 12(46.2) 25(39.7) cN分期 1.176 0.278 N0 12(46.2) 37(58.7) N1 14(53.8) 26(41.3) 临床分期 0.001 0.974 Ⅰ~Ⅱ 16(61.5) 39(61.9) Ⅲ 10(38.5) 24(38.1) 同步化疗方案 3.376 0.066 替吉奥 15(57.7) 23(36.5) 铂类 11(42.3) 40(63.5) 注:EQD2Gy表示2 Gy分次放疗等效剂量。 表 2 89例CEC患者0S、PFS及LRC的单因素分析
Table 2. Single factor analysis of 0S, PFS, and LRC in 89 patients with CEC
项目 例数 5年OS (%) χ2值 P值 5年PFS (%) χ2值 P值 5年LRC (%) χ2值 P值 性别 0.366 0.833 1.635 0.442 3.234 0.198 男性 57 27.9 17.1 24.5 女性 32 24.6 14.1 18.6 年龄 2.969 0.085 1.553 0.213 3.909 0.048 ≤68岁 47 37.9 18.4 26.5 >68岁 42 14.7 14.3 19.1 病变长度 4.865 0.027 3.632 0.057 2.303 0.129 ≤5 cm 65 34.6 17.5 23.0 >5 cm 24 16.7 12.5 22.3 T分期 5.444 0.02 7.712 0.005 6.126 0.013 T1+T2 52 38.9 21.6 25.7 T3+T4 37 18.4 10.0 18.2 N分期 3.219 0.073 5.411 0.02 5.861 0.015 N0 49 31.0 22.6 28.4 N1 40 21.7 10.0 16.0 TNM分期 5.264 0.022 7.806 0.005 4.765 0.029 Ⅰ+Ⅱ 55 36.5 21.1 24.8 Ⅲ 34 18.9 8.8 18.9 EQD2Gy 3.909 0.048 4.659 0.031 8.621 0.003 ≤60 Gy 26 12.2 8.3 12.0 >60 Gy 63 37.2 19.2 27.3 表 3 CEC患者0S、PFS及LRC预后因素的多因素分析
Table 3. Multivariate analysis of prognostic factors of 0S, PFS, and LRC in patients with CEC
项目 因素 P值 HR值 95% CI 0S T分期 0.470 1.403 0.560~3.518 N分期 0.614 0.868 0.499~1.508 临床分期 0.862 0.918 0.394~2.417 肿瘤长度 0.409 1.281 0.711~2.309 GTV剂量 0.047 1.685 1.008~2.816 PFS T分期 0.248 1.673 0.699~4.000 N分期 0.313 0.764 0.452~1.290 临床分期 0.818 0.897 0.356~2.260 肿瘤长度 0.961 1.014 0.573~1.796 GTV剂量 0.027 1.784 1.066~2.986 LRC T分期 0.085 2.235 0.895~5.582 N分期 0.176 0.673 0.379~1.195 临床分期 0.591 1.309 0.490~3.492 肿瘤长度 0.792 0.920 0.493~1.714 GTV剂量 0.006 2.131 1.238~3.669 -
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