Feasibility of endoscopic resection in early gastric cancer with lymphovascular invasion.

Authors

null

Jun Haeng Lee

Samsung Medical Center, Seoul, Korea, Republic of (South)

Jun Haeng Lee , Hyuk Lee , Jae J Kim

Organizations

Samsung Medical Center, Seoul, Korea, Republic of (South), Samsung Medical Center, Seoul, Republic of Korea, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea, Republic of (South)

Research Funding

Other

Background: Lymphovascular invasion (LVI) is associated with the risk of lymph node metastasis (LNM) and poor survival in gastric cancer patients. However, it is unclear whether LVI is a noncurative criteria component in all patients. We evaluated the risk factors of LNM in LVI-positive early gastric cancer (EGC) patients and identified a subgroup with a negligible LNM risk to assess the feasibility of endoscopic resection in these patients. Methods: The clinicopathologic and survival data of patients undergoing surgery for gastric cancer were reviewed; LVI-positive EGC patients were selected. Logistic regression analysis was used to test the associations of potential risk factors with LNM; Kaplan-Meier analysis was used to compare survival curves. Results: LVI was detected in 1,243 (15.5%) patients. In the multivariate logistic analysis, larger tumor size (odds ratio [OR], 1.23; 95% confidence interval [CI], 1.16-1.31; P < 0.001), presence of ulcer (OR, 1.80; 95% CI, 1.15-2.82, P = 0.010), undifferentiated histology (OR, 1.64; 95% CI, 1.25-2.16; P < 0.001), submucosal invasion (OR, 2.28, 95% CI, 1.38-3.76, P = 0.001), middle (OR, 2.12; 95% CI, 1.26-3.55, P = 0.004) or lower third location (OR, 2.28; 95% CI, 1.32-3.60, P = 0.002), and younger age (OR, 0.98; 95% CI, 0.97-0.99; P = 0.002) independently predicted LNM in LVI-positive EGC patients. LVI-positive patients fulfilling the absolute endoscopic resection criteria did not have LNM, and there was no significant difference in the overall (P = 0.928) and disease-specific survival (P = 0.821) between these patients and those with LVI-negative EGC. Conclusions: Additional surgery after endoscopic resection might be unnecessary in LVI-positive patients meeting the absolute criteria for endoscopic resection.

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Abstract Details

Meeting

2019 Gastrointestinal Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session A: Cancers of the Esophagus and Stomach

Track

Cancers of the Esophagus and Stomach

Sub Track

Multidisciplinary Treatment

Citation

J Clin Oncol 37, 2019 (suppl 4; abstr 87)

DOI

10.1200/JCO.2019.37.4_suppl.87

Abstract #

87

Poster Bd #

H17

Abstract Disclosures

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