- Patients who are considered to have unresectable hepatic metastases will be excluded. Hepatic metastases are considered unresectable if their removal would leave behind insufficient liver parenchyma for subsequent regeneration and survival. In addition, hepatic metastases are considered unresectable if their removal would be expected to leave behind residual disease (positive margins). Also, patients are considered unresectable if they have any comorbid conditions which would jeopardize successful recovery from hepatic resection.