Risk Factors for Metastasis and Prognosis in Non‐Curative Resection After Endoscopic Submucosal Dissection for Undifferentiated‐Type Early Gastric Cancer in a Nationwide Cohort in Japan

Key Points

• The research aims to identify risk factors associated with lymph node metastasis in early gastric cancer following non-curative resection.
• Analyzed data from a nationwide cohort in Japan
• Examined lymphatic invasion and tumor size as primary factors
• Utilized the eCura system for risk stratification
• Lymphatic invasion significantly associated with increased risk of lymph node metastasis
• Tumor size greater than 30 mm correlates with higher metastasis risk
• Supports eCura system for improved risk assessment