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中华普外科手术学杂志(电子版) ›› 2019, Vol. 13 ›› Issue (03) : 283 -286. doi: 10.3877/cma.j.issn.1674-3946.2019.03.022

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论著

MSI状态与Ⅱ期、Ⅳ期结肠癌患者预后及其临床病理特征的相关性分析及思考
刘超1, 姬乐1, 白铁成1,()   
  1. 1. 716000 延安,延安大学附属医院胃肠外科
  • 收稿日期:2018-06-23 出版日期:2019-06-26
  • 通信作者: 白铁成

Correlation between MSI status, clinicopathological features and prognosis of patients with stage Ⅱ and Ⅳ colon cancer

Chao Liu1, le Ji1, Tiecheng Bai1,()   

  1. 1. Department of Gastrointestinal surgery, the Affiliated Hospital of Yan’an University, Shanxi 716000, China
  • Received:2018-06-23 Published:2019-06-26
  • Corresponding author: Tiecheng Bai
  • About author:
    Corresponding author: Bai Tiecheng, Email:
引用本文:

刘超, 姬乐, 白铁成. MSI状态与Ⅱ期、Ⅳ期结肠癌患者预后及其临床病理特征的相关性分析及思考[J/OL]. 中华普外科手术学杂志(电子版), 2019, 13(03): 283-286.

Chao Liu, le Ji, Tiecheng Bai. Correlation between MSI status, clinicopathological features and prognosis of patients with stage Ⅱ and Ⅳ colon cancer[J/OL]. Chinese Journal of Operative Procedures of General Surgery(Electronic Edition), 2019, 13(03): 283-286.

目的

分析微卫星不稳定(MSI)状态与Ⅱ期、Ⅳ期结肠癌患者预后及其临床病理特征的相关性分析,探讨结肠癌患者病理分期及预后的评估思路。

方法

将2010年3月至2017年5月收治的271例结肠癌患者纳入前瞻性研究。按照患者MSI状态,将其分别纳入高频MSI组、低频MSI组以及微卫星稳定(MSS)组,采用SPSS 18.0进行分析,各组患者生存情况及临床病理特征以(例/%)表示,采用χ2检验;总生存期以(±s)表示,采用t检验;影响因素分析使用多因素Logistic回归模型。以P<0.05为差异有统计学意义。

结果

271例患者中,108例为高频MSI,86例为低频MSI,77例为MSS;MSI者占比为71.6%(194/271)。高频MSI患者总生存期为(26.2±3.8)个月,高于低频MSI组的(18.2±2.7)个月及MSS组的(17.6±2.6)个月,差异有统计学意义(P<0.05)。高频MSI组年龄、肿瘤部位、病理分型与低频MSI组、MSS组比较,差异有统计学意义(P<0.05)。多因素Logistic回归分析示,以随访期间死亡为因变量,年龄<65岁、高频MSI为保护因素,淋巴结转移为影响患者预后的独立危险因素(P<0.05)。

结论

Ⅱ期、Ⅳ期结肠癌患者中MSI者占比较高,高频MSI者有着特殊临床病理特征,包括年龄较低、肿瘤部位以右半结肠为主、病理分型以粘液腺癌为主等,且该类患者预后较为理想。

Objective

To analyze the correlation of Microsatellite instability (MSI) status, clinicopathological features and prognosis of patients with II and IV stage colon cancer, therefore to predict pathological staging and prognosis of patients with colon cancers.

Methods

A total of 271 patients with colon cancer in our hospital from March 2010-May 2017 were enrolled into this prospective study. According to MSI status, patients were divided into high frequency MSI group, low frequency MSI group and the microsatellite stability (Microsatellite stability, MSS) group. Statistical analysis were performed by using SPSS18.0 software. Total survival time were expressed as mean±standard deviation, and were examined by t-test. The survival and clinicopathological characteristics of patients in each group were expressed as percentage (%), and was examined by chi-square test. The influencing factors were analyzed by multivariate Logistic regression model. A P value <0.05 was considered as significant difference.

Results

Among 271 patients, 108 cases were high frequency MSI, 86 cases were low-frequency MSI, while 77 cases were MSS, with MSI of 71.6%(194/271). Total survival time of (26.2±3.8) months in high frequency MSI group were, higher than (18.2±2.7) months and (17.6±2.6) months in low frequency MSI group and in MSS group respectively, with significant difference (P<0.05). There were significant differences in terms of age, tumor location and pathological type, between high frequency MSI group, low-frequency MSI group and MSS group (P<0.05). Multiple factor Logistic regression analysis showed that the death was a dependent variable during the follow-up period, while the age < 65 years and high frequency MSI were protective factors, and lymph node metastasis was an independent risk factor affecting the prognosis of patients (P<0.05).

Conclusion

There were high incidence of MSI in patients with stage II and IV colon cancer.Patients with high frequency MSI exhibit clinicopathological features, including young age, tumor location in right hemicolon and mainly of adenocarcinoma, importantly with pretty good prognosis.

图1 271例结肠癌患者高频MSI、低频MSI与MSS患者的生存曲线[MSI:微卫星不稳定;MSI-H:高频MSI;MSI-L:低频MSI;MSS:微卫星稳定]
表1 271例结肠癌患者不同MSI状态者临床病理特征比较[例(%)]
表2 影响271例结肠癌患者预后的多因素回归分析结果
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