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Predictive factors for lymph node metastasis in poorly differentiated early gastric cancer and their impact on the surgical strategy.

Abstract：

AIM:To identify the predictive clinicopathological factors for lymph node metastasis (LNM) in poorly differentiated early gastric cancer (EGC) and to further expand the possibility of using endoscopic mucosal resection (EMR) for the treatment of poorly differentiated EGC. METHODS:Data were collected from 85 poorly-differentiated EGC patients who were surgically treated. Association between the clinicopathological factors and the presence of LNM was retrospectively analyzed by univariate and multivariate logistic regression analyses. RESULTS:Univariate analysis showed that tumor size (OR= 5.814, 95% CI = 1.050 - 32.172, P = 0.044), depth of invasion (OR=10.763, 95% CI=1.259 - 92.026, P = 0.030) and lymphatic vessel involvement (OR= 61.697, 95% CI= 2.144 - 175.485, P = 0.007) were the significant and independent risk factors for LNM. The LNM rate was 5.4%, 42.9% and 50%, respectively, in poorly differentiated EGC patients with one, two and three of the risk factors, respectively. No LNM was found in 25 patients without the three risk factors. Forty-four lymph nodes were found to have metastasis, 29 (65.9%) and 15 (34.1%) of the lymph nodes involved were within N1 and beyond N1, respectively, in 12 patients with LNM. CONCLUSION:Endoscopic mucosal resection alone may be sufficient to treat poorly differentiated intramucosal EGC (< or = 2.0 cm in diameter) with no histologically-confirmed lymphatic vessel involvement. When lymphatic vessels are involved, lymph node dissection beyond limited (D1) dissection or D1+ lymph node dissection should be performed depending on the tumor location.

journal_name

World J Gastroenterol

journal_title

World journal of gastroenterology

authors

Li H,Lu P,Lu Y,Liu CG,Xu HM,Wang SB,Chen JQ

doi

10.3748/wjg.14.4222

subject

Has Abstract

pub_date

2008-07-14 00:00:00

pages

4222-6

issue

26

eissn

1007-9327

issn

2219-2840

journal_volume

14

pub_type

杂志文章

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