• Dailong Li, Wanqiang Li, Yaqi Pang, Siqi Liu, Lu Xu, and Xinhua Xu.
• Department of Oncology, Yichang Central People's Hospital, The First College of Clinical Medical Science, China Three Gorges University, Yichang, China.
• Medicine (Baltimore). 2022 Jul 1; 101 (26): e29798e29798.

AbstractLymphovascular invasion is considered to be a high-risk pathological feature after radical resection of gastric cancer, but the relationship between lymphovascular invasion and the prognosis of stage I gastric cancer is still controversial. Therefore, we used meta-analysis to systematically evaluate the relationship between lymphovascular invasion and the prognosis of stage I gastric cancer. Up to September 2, 2021, the databases of PubMed, EMBASE, Cochrane Library, CNKI, and Wanfang were searched. According to the inclusion and exclusion criteria, 2 researchers independently completed the screening of literature, extraction of data, and quality evaluation. Meta-analysis was performed using RevMan 5.4 software merged with HR and 95%CI. A total of 7508 patients with stage I gastric cancer were included in 9 studies, and the positive rate of lymphovascular invasion was 17%. Lymphovascular invasion was significantly associated with shorter overall survival (OS) (univariate: HR = 4.05, 95%CI: 1.91-8.58; multivariate: HR = 2.10, 95%CI: 1.37-3.22) and relapse-free survival (RFS) (univariate: HR = 4.79, 95%CI: 2.30-9.99; multiple: HR = 2.17, 95%CI: 1.56-3.00). This study indicates that lymphovascular invasion is an independent risk factor affecting the prognosis of patients with stage I gastric cancer, and can be used as a reference index for postoperative adjuvant therapy.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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