As the prevalent malignancy of alimental track,the incidence and mortality for colorectal cancer(CRC) ascended to the fourth and fifth place in China,respectively.The therapy for CRC most fails to hepatic metastasis.At present,the combination of multiple therapies plays a great role in CRC,especially surgical therapy.It's necessary to have a precise evaluation on the prognosis.However the clinical examinations can not meet with the request.Detection of the changes in the molecular level will assist in...