Separately analyzing the data of the right-sided cancer group and the left-sided cancer group demonstrated that primary resection might be acceptable for right-sided obstructive CRC and delayed resection might be done for patients with poorer general conditions (high PPS) and poorer oncological prognostic factors such as more type 3/type 4 cases, a larger tumor size, a less well-differentiated histopathological type, more T4 cases, and a higher CEA level.
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