Fluorescence Guided Laparoscopic-Endoscopic Cooperative Sentinel Lymph Node Navigation Surgery Strategy for Early Gastric Cancer（IDEAL Stage 2b）

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• 1) Patients with a contraindication for gastroscopy. 2) Patients with uncontrollable diseases, such as coagulation disorders, epilepsy, central nervous system diseases or mental disorders, cardiopulmonary insufficiency, unstable angina, myocardial infarction, a cerebrovascular accident that occurred within 6 months, and other surgical contraindications.
  • Patients unable to undergo general anesthesia or surgical treatment due to conditions related to other organs, or unwilling to undergo surgery.
  • Patients with gastric stump cancer, recurrent gastric cancer, multiple primary malignant tumors in the abdominopelvic cavity, or a history of other malignant tumors within the previous 5 years.
  • Pregnant or lactating women. 6) Participants enrolled in other clinical trials. 7) Patients with undeterminable tracer staining range or contraindications to tracer use.
  • Patients who fail to receive or fail ESD therapy. 9) Patients who meet the absolute indication of ESD.

• 1) Patients aged 18-80 years, regardless of gender. 2) Patients with Eastern Cooperative Oncology Group (ECOG) score ≤ 2 and American Society of Anesthesiologists (ASA) score ≤ 2 who are candidates for a curative D2 gastrectomy.
  • Patients without prior gastrointestinal surgery, chemotherapy, or radiotherapy.
  • Patients with normal liver, kidney, heart, lung, and bone marrow function (GPT × 109 /L, PLT>109 /L).
  • Patients capable of understanding and adhering to the research protocol. 6) Patients who can provide written informed consent, either personally or through legal representative.
  • Patients with cT1N0M0 gastric cancer or after non-curative ESD resection, according to the UICC TNM staging system, 8th edition.