“…Over recent years, several clinical, histopathological, molecular and genetic variables have been correlated with survival and disease-free survival among patients with colorectal cancer [2][3][4][5][6][7][8][9][10][11][12][13][14]. Thus, early diagnosis [2], age [3], location of the neoplasm [4], histological grade [5], degree of intestinal wall penetration [6], lymph node involvement [7,8], production of mucus by the neoplasm [9], preoperative levels of carcinoembryonic antigen [10,11], venous invasion [12], neural invasion [13] and the expression profile of various genes [14] are the variables that have been studied most as factors relating to the prognosis in this disease. Despite the importance of all these variables, parietal invasion, lymph node involvement and presence of metastases continue to be the main basis for predicting survival and the criteria for instituting adjuvant therapy [7].…”