ABSTRACT
Modern diagnostic imaging modalities have greatly improved preoperative staging of liver tumors. Specifically, high-speed helical computed tomography (CT) and organ-specific scanning protocols have improved preoperative staging of colorectal liver metastases. Magnetic resonance imaging (MRI), especially used in conjunction with liver-specific contrast agents, is more sensitive for the detection of early hepatocellular carcinoma (HCC). Additionally, improved anatomic scans of extrahepatic sites have reduced the number of patients who undergo unnecessary laparotomies. Despite these technologic advancements, 15-20% of patients whose tumors are determined to be resectable preoperatively have conflicting findings with intraperitoneal ultrasound performed at surgery.
