Surgical treatment of liver metastases.

Approximately 50% to 60% of patients with colorectal cancer will develop hepatic metastases during the course of their illness, with 20% to 30% of patients having liver metastases at time of diagnosis. In nearly a quarter of these patients the liver is the only site of disease. Surgical resection of isolated hepatic metastases has been associated with a 27% to 37% 5-year survival and confers a survival advantage compared to patients not undergoing resection. Thorough preoperative and intraoperative evaluation is necessary to select appropriate surgical candidates who may benefit from resection. This article examines criteria useful in patient selection, and also reviews the management of recurrent hepatic metastases and the role of repeat hepatic resection.