Predictors of Lymph Node Metastasis in Western Early Gastric Cancer

Overview

Journal J Gastrointest Surg

Specialty Gastroenterology

Date 2015 Sep 20

PMID 26385006

Citations 22

Authors

Rima Ahmad

Namrata Setia

Benjamin H Schmidt

Theodore S Hong

Jennifer Y Wo

Eunice L Kwak

David W Rattner

Gregory Y Lauwers

John T Mullen

Affiliations

Soon will be listed here.

Abstract

Background: The application of endoscopic and local resection for early gastric cancer (EGC) is limited by the risk of regional lymph node (LN) metastasis. We sought to determine the incidence and predictors of LN metastasis in a contemporary cohort of Western patients with early gastric cancer.

Methods: Sixty-seven patients with pT1 gastric adenocarcinoma underwent radical surgery without neoadjuvant therapy at our institution between 1995 and 2011, and clinicopathologic factors predicting LN metastasis were analyzed.

Results: LN metastases were present in 15/67 (22 %) pT1 tumors, including 1/23 (4 %) T1a tumors and 14/44 (32 %) T1b tumors. Tumor size, site, degree of differentiation, macroscopic tumor sub-classification, perineural invasion status, and depth of submucosal tumor penetration did not predict LN metastasis. The presence of lymphovascular invasion (LVI) and positive nodal status by endoscopic ultrasound (EUS) were the only factors that predicted LN metastasis on multivariate analysis. T1a tumors without LVI had a 0 % rate of positive LN, whereas T1b tumors with LVI had a 64.3 % rate of positive LN.

Conclusions: EGC limited to the mucosa, without evidence of LVI, and N0 on EUS, may be considered for limited resection. However, any EGC with submucosal invasion, LVI, or positive nodes on EUS should undergo radical resection with lymphadenectomy.

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