Serum and Peritoneal CEA and CA 19-9 for Gastric Adenocarcinoma

radical total/subtotal gastrectomy with D2 lymph node dissection

After thoroughly examination of the peritoneal cavity revealing the absence of peritoneal dissemination, the peritoneal cavity was washed with 200 ml of saline, and at least one third was aspirated from several regions of the peritoneal cavity, including near the primary tumor, the left and right subphrenic areas and the pouch of Douglas with suction tubes to a clean bottle and designated as the peritoneal sample for determination of peritoneal levels of CEA and CA 19-9.