With a combination of methods, localization of tumors for laparoscopic surgery did not seem very different from that during open surgery. Preoperative endoscopic tattooing is a safe, highly effective method for localization. In the case of tattoo failure, intraoperative colonoscopy can be used for accurate localization.
The potential predictors of survival for curative stage IV colorectal cancer were male gender, pathologic N stage, and perineural invasion. Resection of the primary tumor and chemotherapy showed benefit for the incurable patients. But for the asymptomatic incurable patients, only chemotherapy prolonged the survival.
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