Exploration of Lymph Node Metastasis and Tumor Deposit in the Posterior Gastric Mesentery for Distal Gastric Cancer
Trial Parameters
Brief Summary
This study aims to evaluate lymph node metastasis and tumor deposit in the posterior gastric mesentery following distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision (CME) in gastric cancer.
Eligibility Criteria
Inclusion Criteria: 1. Aged older than 18 years and younger than 85 years 2. Primary gastric adenocarcinoma confirmed by preoperative pathology result 3. cT2-4N0-3M0 at preoperative evaluation according to the American Joint 8 Committee on Cancer (AJCC) Cancer Staging Manual 7th Edition 4. Patients who received distal gastrectomy with D2 lymphadenectomy plus complete mesogastric excision 5. American Society of Anesthesiologists (ASA) class I, II, or III 6. Written informed consent Exclusion Criteria: 1. Negative preoperative biopsy 2. Too late tumour stage or metastasis (cT4b/M1) 3. BMI\>30 kg/m2 4. Total gastrectomy or proximal gastrectomy 5. previous neoadjuvant chemotherapy or radiotherapy 6. Previous upper abdominal surgery 7. Combined with other malignant diseases 8. Reject operation