白细胞介素2(IL-2)在肿瘤局部的注射治疗,已收到令人满意的结果.但多被应用于机体表面的恶性肿瘤.我科通过内窥镜将IL-2局部注射于贲门癌、胃癌、结肠癌及直肠癌等病人,而后通过手术切除标本,行免疫酶标组织化学染色及电镜检查,观察在肿瘤细胞周围T细胞的增殖及肿瘤细胞的破坏情况,与对照组相比较收到令人满意的结果. Interleukin 2 (IL-2) injection therapy in the tumor has received satisfactory results. However, it is mostly applied to the malignant tumor on the surface of the body. Our department injects IL-2 into the heart through the endoscope. Patients with cancer, gastric cancer, colon cancer, and rectal cancer were surgically resected and immunohistochemical staining and electron microscopy were performed to observe the proliferation of T cells and the destruction of tumor cells around the tumor cells. The results were compared with the control group. Received satisfactory results.