Objective To investigate expression of osteopontin(OPN) and adhesion molecule CD44v6 in colon adenocarcinoma and their clinical signifi cance. Methods 80 cases of colon cancer tissue were detected by immunohistochemical methods(with lymph node metastasis in 32 cases, 48 cases without lymph node metastasis), 30 cases of colorectal adenoma, 20 cases from colon tumor(polyp, adenoma, cancer, etc.) 5 cm above normal tissue osteopontin and CD44v6 expression levels were examined to analyze the correlation of osteo...