Endoscopic submucosal dissection and surgical treatment for gastrointestinal cancer

Table 1 Histological criteria for curative endoscopic resection for gastric cancer

Factors associated with no risk of lymph node metastasis

Intestinal-type histology

No lymphatic or vascular infiltration

Intramucosal cancer, regardless of tumor size, without ulcer findings

or intramucosal cancer less than 30 mm in size with ulcer findings

or minute submucosal invasive cancer (SM1) less than 30 mm in size

Factors associated with the resection margin

Tumor-free horizontal margin

Tumor-free vertical margin