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  • Title: [Characteristics of lymph node metastasis and prognostic analysis in 157 early gastric cancer patients].
    Author: Wu ZM, Wu AW, Li ZY, Wu Q, Zhang LH, Wu XJ, Zong XL, Ji JF, Bu ZD.
    Journal: Zhonghua Wei Chang Wai Ke Za Zhi; 2009 Jul; 12(4):350-3. PubMed ID: 19598016.
    Abstract:
    OBJECTIVE: To explore the pattern of lymph node metastasis and its influence on the prognosis of early gastric cancer(EGC). METHODS: The pattern of lymph node metastasis and the 3-,5-year survival rates in 157 EGC patients undergone surgery from October 1995 to October 2005 were analyzed retrospectively. The SPSS 11.5 statistics software was used to perform univariate and multivariate analysis. RESULTS: Twenty-two cases had lymph node metastasis among 157 EGC patients(14%). Two mucous cancers(2.4%) and 20 submucosal tumors(27.0%) had lymph node metastases (P<0.01). Lymph node metastasis was not seen in minute gastric cancer(diameter < or =0.5 cm). Lymph node metastasis rates were 6.4% in the cancers with diameter 1.1-2.0 cm and 21.5% in the cancers with the diameter >2.0 cm(P<0.01). Besides, lymph node metastasis rate of well-differentiated EGC was 0, of moderate differentiated EGC 11.1%, and poor-differentiated EGC 0.9%(P<0.01). Of 9 cases with vascular cancer embolus, 4 had lymph node metastases. Logistic regression analysis showed that tumor size, vascular cancer embolus, histopathological type and depth of invasion were independent factors of lymph node metastasis in EGC. The 3- and 5-year survival rates of EGC patients with lymph node metastasis were 81.6 % and 79.5% respectively, which were much lower than those without lymph node metastasis(95.7% and 93.2%, P<0.01). CONCLUSIONS: Lymph node metastasis in EGC is mainly correlated with depth of infiltration, tumor size, vascular cancer embolus and differentiation. For EGC treatment, choice should be made reasonably based on the risk of lymph node metastasis.
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