- Resected primary colorectal cancer and no metastatic disease or primary colorectal cancer with no metastatic disease and planned resection after neo-adjuvant chemotherapy or metastatic colorectal carcinoma considered by the attending physician to have resectable or potentially resectable hepatic metastases (patients only). Each patient will be staged by his/her attending physician in the Department of Medicine or Surgery. Hepatic metastases are considered resectable if they are expected to be completely removable with negative margins by a procedure that leaves behind sufficient liver parenchyma with arterial/portal blood supply, venous drainage and biliary drainage for subsequent regeneration and survival. Potentially resectable indicates that a reduction in tumor size due to chemotherapy could render the tumors resectable.