Chen L, Tang K, Wang S, Chen D, Ding K. Predictors of Lymph Node Metastasis in Siewert Type II T1 Adenocarcinoma of the Esophagogastric Junction: A Population-Based Study.
Cancer Control 2021;
28:10732748211026668. [PMID:
34155922 PMCID:
PMC8226374 DOI:
10.1177/10732748211026668]
[Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background:
Endoscopic resection has been introduced as an alternative treatment for
superficial adenocarcinoma of the esophagogastric junction (AEG), but is
limited by positive nodal status. We aimed to investigate the predictors of
lymph node metastasis (LNM) in patients with Siewert type II T1 AEG.
Methods:
The Surveillance, Epidemiology, and End Results (SEER) database was used to
identify eligible patients with Siewert type II T1 AEG. The prevalence of
LNM was assessed. Logistic regression analysis with multivariable adjustment
was used to determine predictors of LNM. We also performed Cox regression
analysis to examine the prognostic value of LNM, which was further confirmed
by competing risk analysis and cumulative incidence function (CIF).
Results:
In total, 2651 patients with T1 AEG were included, with a median age of 69
years and a median follow-up of 28 months. The overall prevalence of LNM was
17.2% in T1 AEG. When stratified by tumor invasion depth, the prevalence of
LNM was 8.5% for intramucosal tumors and 22.6% for submucosal tumors.
Adjusted logistic regression analysis showed that age, sex, tumor grade,
tumor size and tumor infiltration depth were independent predictors of LNM
in T1 AEG. Multivariate Cox regression analysis revealed that positive nodal
status was significantly associated with worse overall survival and
cancer-specific survival (CSS). Subgroup analysis consistently demonstrated
that patients with LNM had significantly poorer CSS than those without LNM
in most subgroups. Finally, the CIF was calculated, showing that patients
with LNM had a significantly higher cancer-specific death rate than those
without LNM.
Conclusions:
This population-based study identified age, sex, tumor grade, tumor
infiltration depth and tumor size as independent predictors of LNM in T1
AEG. Considering the high prevalence of LNM in T1 AEG, endoscopic resection
for curative aims may only be introduced in patients without high risks of
LNM.
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