应用放射免疫分析法检测60例胃肠道肿瘤血清胃泌素，其值较20例对照组明显升高，胃底癌、胃体癌、分化良好的大肠腺癌升高尤为显著；并探讨其发生机制及临床意义。 Radioimmunoassay was used to detect serum gastrin in 60 cases of gastrointestinal tumors, which was significantly higher than that of the control group. Gastric floor cancer, corporeal cancer, and well-differentiated colorectal adenocarcinoma were significantly elevated; Mechanism and clinical significance.