胃癌是我国最常见的消化道恶性肿瘤,对于其早期诊断和治疗,仍是医学临床工作中面临的严峻挑战。我国胃癌患者许多都是在进展期诊断的,已经无法行根治性手术,且预后极差。虽然近年来胃癌根治性手术有较大发展,其术后复发转移发生率有明显下降,但是其病死率仍居恶性肿瘤的前列。研究表明:胃癌患者半数以上死于肿瘤的腹膜种植转移。腹腔内游离癌细 Gastric cancer is the most common malignant tumor of the digestive tract in our country. For its early diagnosis and treatment, gastric cancer remains a serious challenge in medical clinical work. Many of our patients with gastric cancer are diagnosed in advanced stage, and have been unable to perform radical surgery, and the prognosis is very poor. Although in recent years radical surgery for gastric cancer has a greater development, the incidence of postoperative recurrence and metastasis decreased significantly, but its mortality is still the forefront of malignant tumors. Studies have shown that more than half of patients with gastric cancer die from tumor peritoneal metastasis. Intraperitoneal free cancer fine