The Clinical Significance of Examining Metastatic Lymph Nodes in Individual Gastric Mesenteries in the Patients With Gastric Cancer Undergoing Gastrectomy

This study is looking at whether examining the lymph nodes in the fatty tissue surrounding the stomach (mesenteries) during surgery for gastric cancer provides important information about how far the cancer has spread. The goal is to understand if this additional analysis improves cancer staging and treatment decisions. **You may be eligible if...** - You are 18 to 85 years old - You have been diagnosed with stomach (gastric) adenocarcinoma confirmed by biopsy - Your cancer is at a resectable stage (T2-T4a, has not spread to distant organs) - You are having surgery with full lymph node removal (D2 lymphadenectomy) - You are generally fit for major surgery **You may NOT be eligible if...** - Your cancer has spread to distant organs (stage M1) or is locally unresectable (T4b) - Your BMI is above 30 - You have previously received chemotherapy or radiation for this cancer - You have had prior upper abdominal surgery Talk to your doctor to see if this trial is right for you.