Standardization of surgical treatment of colorectal cancer: from TME、to TSME to CME        ZHANG Zhong-tao，YANG Ying-chi. Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050,China
Corresponding author：ZHANG Zhong-tao, E-mail：zhang-zht@medmail.com.cn
Abstract  The standardization of the treatment methods and concepts are closely related to improve the efficacy of treatment and prognosis. From the wide application of TME concept and the improvement and supplement by TSME concepts, to the CME theory in recent years, the gastrointestinal surgeons never stopped the efforts to standardize the colorectal cancer surgical treatment. This paper described the concepts of TME, TSME, CME and explored the importance of standardization of surgical treatment of colorectal cancer.