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Objective: The aim of the study was to test the expressions of Livin and insulin-like growth factor Ⅱ(IGF-Ⅱ)in colorectal cancers and discuss their significance of carcinogenesis and progression in colorectal cancers,to provide a new target and theory basement for cancer therapy.Methods: The expressions of Livin and IGF-Ⅱ were detected by immunohistochemistry SABC in 60 cases of colorectal cancer and their associated colorectal tissues,and the associations between the expression levels of Livin and IGF-histochemistry and clinical pathological characteristics were analyzed.Results: The positive rates of Livin and IGF-Ⅱ in colorectal carcinomas were 68.33% and 63.33% respectively,higher than those of para-carcinomatous normal tissues and colorectal adenomas.There were no significant correlations between the expressions of Livin,IGF-Ⅱ in colorectal carcinomas and the patient's age,sex,tumor size and location,while distant metastasis,Dukes stage,histological type,lymph node metastasis,and whether the tumors have received radiotherapy and chemotherapy were significantly correlated with the expressions of Livin,IGF-cal in colorectal carcinomas.Conclusion: Livin and IGF-cal play important roles in carcinogenesis and progression of colorectal cancer.This study showed obvious correlation between the expressions of Livin and IGF-Ⅱ in colorectal cancers.It could be used as the reference for further researches.Livin is hopeful to be a new molecular target in cancer therapy.