目的:探讨同时性胃、结直肠癌患者发病的临床特点和预后。方法:回顾性分析1985年3月至2005年5月收治的3416例胃癌和3109例结直肠癌患者的临床和病理资料。结果:胃和结直肠同时性癌13例,占所有胃癌病例的0.38%,占所有结直肠癌病例的0.42%;术前诊断率15.4%;手术后发现的第二癌根治切除率为33.3%;第二癌术后3年生存率为30.8%,无5年生存者。结论:同时性胃癌和结直肠癌的术前诊断率、第二癌根治切除率和第二癌术后3年生存率均较低;提高第二癌根治切除率和第二癌术后长期生存率的关键在于提高第一次手术前的诊断率。 Objective: To investigate the clinical features and prognosis of patients with simultaneous gastric and colorectal cancer. Methods: The clinical and pathological data of 3416 patients with gastric cancer and 3,109 patients with colorectal cancer who were treated from March 1985 to May 2005 were analyzed retrospectively. Results: Thirteen gastric and colorectal carcinomas accounted for 0.38% of all gastric cancer cases, accounting for 0.42% of all colorectal cancer cases. The preoperative diagnosis rate was 15.4%. The second radical resection and radical resection rate was 33.3% ; 3-year survival rate of second cancer after surgery was 30.8%, no 5-year survival. Conclusions: The preoperative diagnosis rates of concurrent gastric cancer and colorectal cancer, the second radical cancerous resection rate and the second three-year survival rate of postoperative second surgery are both lower; and the second radical resection and postoperative long-term survival The key is to improve the rate of the first surgery before the diagnosis.