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  • Title: The prognostic role of angiolymphatic invasion in N0 esophageal carcinoma: a meta-analysis and systematic review.
    Author: Wang A, Tan Y, Zhang Y, Xu D, Fang Y, Chen X, Wang S.
    Journal: J Thorac Dis; 2019 Aug; 11(8):3276-3283. PubMed ID: 31559030.
    Abstract:
    BACKGROUND: Angiolymphatic invasion (ALI) plays an important role in lymph node metastasis. The presence of an ALI predicts a high risk for lymph node metastasis and a poor prognosis in patients with lymph node negative esophageal carcinoma. The independent prognostic value of ALI in node-negative patients remains controversial. A meta-analysis was conducted to investigate the relationship between ALI and prognosis in cases of lymph node negative esophageal carcinoma. METHODS: We searched the PubMed, EMBASE, Web of Science, and Cochrane Library databases for studies on the relationship between ALI and the prognosis of patients with esophageal carcinoma. Studies with N0 patients' survival data related to ALI were included. The effect size (ES) was the hazard ratio (HR) with 95% confidence intervals (CI) for cancer-specific survival (CSS), overall survival (OS) and recurrence-free survival (RFS). RESULTS: A total of 9 studies with 2,154 patients were included after applying the inclusion and exclusion criteria. The pooled HR showed that patients with ALI have a poor cancer specific survival (HR =2.54; 95% CI, 1.84-3.51; P<0.001), a poor overall survival (HR =2.84; 95% CI, 2.17-3.72; P<0.001) and a short disease free survival (HR =2.84; 95% CI: 1.85-4.37; P<0.001). CONCLUSIONS: ALI could be used as an indicator for identifying high-risk patients with lymph node-negative esophageal carcinoma and can be used as an indicator for sub-stages in further stage classification.
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