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中华医学超声杂志(电子版) ›› 2020, Vol. 17 ›› Issue (04) : 300 -307. doi: 10.3877/cma.j.issn.1672-6448.2020.04.003

所属专题: 文献

腹部超声影像学

同时性结直肠癌肝转移瘤消融治疗后辅助化疗起始时间对患者预后的影响
林静1, 崔瑞1, 覃斯1, 陈瑶1, 黄玉笑1, 刘广健1,()   
  1. 1. 510655 广州,中山大学附属第六医院超声科
  • 收稿日期:2019-11-13 出版日期:2020-04-01
  • 通信作者: 刘广健

Effect of time of initiating adjuvant chemotherapy on prognosis of patients with synchronous colorectal liver metastasis after microwave ablation

Jing Lin1, Rui Cui1, Si Qin1, Yao Chen1, Yuxiao Huang1, Guangjian Liu1,()   

  1. 1. Department of Medical Ultrasound, the Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510655, China
  • Received:2019-11-13 Published:2020-04-01
  • Corresponding author: Guangjian Liu
  • About author:
    Corresponding author: Liu Guangjian,
引用本文:

林静, 崔瑞, 覃斯, 陈瑶, 黄玉笑, 刘广健. 同时性结直肠癌肝转移瘤消融治疗后辅助化疗起始时间对患者预后的影响[J]. 中华医学超声杂志(电子版), 2020, 17(04): 300-307.

Jing Lin, Rui Cui, Si Qin, Yao Chen, Yuxiao Huang, Guangjian Liu. Effect of time of initiating adjuvant chemotherapy on prognosis of patients with synchronous colorectal liver metastasis after microwave ablation[J]. Chinese Journal of Medical Ultrasound (Electronic Edition), 2020, 17(04): 300-307.

目的

本研究以探究微波消融(MWA)治疗后辅助化疗(AC)起始时间对同时性结直肠癌肝转移瘤(CRLM)患者肝内无复发生存(RFS)及肝损害的影响。

方法

回顾性分析2013年10月至2019年1月在中山大学附属第六医院确诊为同时性CRLM且行超声引导下经皮MWA治疗联合AC治疗的患者。本研究共纳入患者144例,其中G1组98例,G2组46例。中位肝内RFS为22.2个月。根据MWA术后AC开始时间,将患者分为≤4周(G1)和4~8周(G2)2组。比较G1组和G2组消融后及第1次AC前后血清丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)水平的变化。采用Kaplan-Meier法和Log-rank检验计算并比较两组患者的肝内RFS。采用Cox比例风险模型对肝内RFS的危险因素进行单因素和多因素回归分析。

结果

G1组肝内RFS较G2组显著延长(中位肝内RFS,40.6个月 vs 12.6个月,Log-rank P=0.007)。采用Cox比例风险模型分析结果发现,辅助化疗开始时间间隔为4~8周(HR=1.917,95%CI:1.104~3.327,P=0.021)和肝转移瘤个数(HR=1.292,95%CI:1.096~1.524,P=0.002)是肝内RFS时间短的独立影响因素。G1组和G2组第1次AC前、后ALT、AST水平,差异均无统计学意义(P均>0.05)。

结论

对于同时性CRLM患者,在MWA治疗后早期开始AC(≤4周)有助于延长术后肝内RFS时间。

Objective

To investigate the influence of time of initiating adjuvant chemotherapy (AC) on intrahepatic recurrence-free survival (RFS) and liver injury in patients with synchronous colorectal liver metastasis (CRLM) after receiving microwave ablation (MWA).

Methods

Data were retrospectively collected from patients with synchronous CRLM undergoing ultrasound-guided percutaneous MWA combined with AC at our center from October 2013 to January 2019. According to the time of initiating AC relative to the date of MWA, the patients were categorized into two groups:≤4 weeks (G1) and 4~8 weeks (G2). Kaplan-Meier method and log-rank test were used to compare the RFS between the two groups. Cox regression models were used for univariate and multivariate analyses to identify predictors of RFS. Besides, the levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) before and after the first AC were also compared between the G1 and G2 groups.

Results

A total of 144 patients were included in this study (G1, n=98; G2, n=46). Median RFS was 22.2 months. The RFS was significantly longer in the G1 group than in the G2 group (median RFS, 40.6 months vs 12.6 months, log-rank P=0.007). In Cox regression analysis, G2 (hazard ratio [HR]=1.917, 95% confidence interval CI: 1.104-3.327, P=0.021) and the number of tumors (HR=1.292, 95%CI: 1.096-1.524, P=0.002) were independent predictors of shorter RFS. There was no difference in ALT or AST level between the G1 and G2 groups before and after the first AC (P>0.05).

Conclusion

For synchronous CRLM patients, receiving AC within 4 weeks after MWA may be beneficial to longer RFS.

图1 患者男性,45岁,确诊乙状结肠癌肝转移1个月超声与超声造影图像。图a为超声表现为1个高回声结节,边界尚清,形态规则,内回声不均;图b为超声造影团注后病灶动脉期呈均匀高增强;图c为超声造影门脉相及延迟相病灶廓清,低于周围肝组织;图d为消融针抵达病灶底部;图e为消融区域被强回声完全覆盖;图f为微波消融术后6个月超声造影动脉期消融灶及周边未见异常增强
表1 微波消融结直肠癌肝转移瘤后辅助化疗开始时间不同的两组患者的基本信息
临床资料 ≤4周(G1组,98例) 4~8周(G2组,46例) 统计值 P
性别[例(%)]     - 1.000
  男性 72(73.5) 34(73.9)    
  女性 26(26.5) 12(26.1)    
年龄[岁,例(%)]     - 0.113
  ≤65 76(77.6) 41(89.1)    
  >65 22(22.4) 5(10.9)    
原发灶位置[例(%)]     Z=1.486 0.510
  右半结肠 9(9.2) 7(15.2)    
  左半结肠 39(39.8) 19(41.3)    
  直肠 50(51.0) 20(43.5)    
原发灶病理T分期[例(%)]a     - 0.413
  ≤T3 88(89.8) 39(84.8)    
  T4 10(10.2) 7(15.2)    
原发灶病理N分期[例(%)]a     - 0.264
  N0 38(38.8) 13(28.3)    
  N1~2 60(61.2) 33(71.7)    
肝外转移[例(%)]     - 0.505
  80(81.6) 35(76.1)    
  18(18.4) 11(23.9)    
肝转移瘤个数[个,中位数(范围)] 2(1~9) 2(1~7) Z=-0.184 0.856
肝转移瘤最大直径[mm,中位数(范围)] 15.0(6~45) 15.5(6~34) Z=-0.333 0.741
消融前CEA[ng/ml,例(%)]     - 0.388
  ≤30 86(87.8) 43(93.5)    
  >30 12(12.2) 3(6.5)    
术前化疗[例(%)]     - 0.474
  48(49.0) 19(41.3)    
  50(51.0) 27(58.7)    
消融时原发灶是否切除[(%)]     - 0.074
  已切除 53(54.1) 17(37.0)    
  未切除 45(45.9) 29(63.0)    
原发灶切除时间[例(%)]     - <0.001
  非同期 69(70.4) 9(19.6)    
  同期 29(29.6) 37(80.4)    
MWA距离AC时间[d,中位数(范围)] 13(0~28) 36(29~54) Z=-9.661 <0.001
表2 微波消融结直肠癌肝转移瘤后辅助化疗开始时间不同的两组患者的肝功能水平对比
图2 微波消融结直肠癌肝转移瘤后辅助化疗开始时间不同的两组患者的肝内无复发生存曲线
表3 微波消融治疗结直肠癌肝转移瘤患者肝内无复发生存的影响因素与赋值
表4 微波消融治疗结直肠癌肝转移瘤患者肝内无复发生存的影响因素Cox回归单因素分析
表5 微波消融治疗结直肠癌肝转移瘤患者肝内无复发生存的影响因素Cox回归多因素分析
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