Evaluation of simultaneous laparoscopic resection for liver metastases and colorectal cancer

Colorectal cancer (CRC) is the third most common cancer in males and the second most common in females, with an incidence of about 1.4 million cases in total, and 693,900 related deaths in 2012 (1). During the natural progression of CRC, approximately 50% of patients develop hepatic metastases, of whom 15% to 50% have synchronous liver metastases (2,3). Laparoscopic hepatectomy for liver tumors was first reported in the 1990s (4).