Risk factors of lymph node metastasis in patients with T1 stage colorectal cancer—a retrospective cohort study based on the Surveillance, Epidemiology, and End Results database

Journal of Gastrointestinal Oncology

article

Yin Wang¹  Sheng Zheng²  Wenjie Du³  Juan Yang²  Xiaozhou Mao⁴  Tao Liu⁴  Qiuxin Zhang⁴  Zhipeng Fu⁴  Xing Zhu²  Yeli Guo⁵ 

[1] Department of Gastroenterology, The People’s Hospital of Bozhou;Department of Gastroenterology, The Third People’s Hospital of Yunnan Province;Department of Critical Care Medicine, The People’s Hospital of Bozhou;Graduate School of Clinical Medicine, Dali University;Department of Internal Medicine, Traditional Chinese Medical Hospital of Zhuji

关键词: Colorectal cancer (CRC);    lymph node metastasis;    prediction model;   

DOI  :  10.21037/jgo-23-125

学科分类：肿瘤学

来源: Pioneer Bioscience Publishing Company

【 摘 要 】

Background: Patients with T1 stage early colorectal cancer (CRC) can be treated with radical surgery or endoscopic surgery. Endoscopic surgery has a number of advantages, including minimal trauma and a rapid recovery. However, it cannot remove regional lymph nodes to assess whether there is lymph node metastasis. Thus, the analysis of the risk factors of lymph node metastasis in patients with T1 stage CRC is of great significance in the selection of appropriate treatment methods. Although previous studies have explored the risk factors for lymph node metastasis in T1 stage CRC patients, the number of cases were relatively insufficient, and further exploration is necessary. Methods: A total of 2,085 patients who had been pathologically diagnosed with CRC from 2015 to 2017 from the Surveillance, Epidemiology, and End Results (SEER) database. Among the patients, 324 had lymph node metastasis. A multivariate logistic regression analysis was conducted to analyze the risk factors of lymph node metastasis in patients with T1 stage CRC. Next, we established a prediction model to predict lymph node metastasis in patients with T1 stage CRC. Results: The results of the multivariate logistic regression analysis showed that age at diagnosis, rectosigmoid cancer, poorly differentiated or undifferentiated tumor cells, and distant metastasis were independent factors of lymph node metastasis in patients with T1 stage CRC (P<0.05). This study used the R4.0.3 statistical software for the statistical analysis. The data set was randomly divided into a training set and verification set. The training set comprised 1,460 patients, and the verification set comprised 625 patients. The area under the receiver operating characteristic curve (AUC) of the training set was 0.675 [95% confidence interval (CI): 0.635–0.714], and the AUC of the verification set was 0.682 (95% CI: 0.617–0.747). In the validation set, the model was tested by the Hosmer-Lemeshow Goodness-of-Fit Test (χ2=4.018, P=0.855), and the results showed that the model was reliable at predicting lymph node metastasis in patients with T1 stage CRC. Conclusions: For CRC patients with high risk factors of lymph node metastasis, endoscopic physicians should carefully evaluate the advantages and disadvantages of the endoscopic surgery before deciding whether to perform this surgery.

【 授权许可】

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