Change in preoperative strategy based on intraoperative ultrasound findings.

Forty patients with primary liver carcinoma and 52 with liver secondaries underwent careful preoperative evaluation using computed tomography and magnetic resonance imaging, as well as intraoperative studies using intraoperative ultrasound (IOUS). The results were compared to histological findings. In the 40 patients with primary tumors who underwent hepatic resection, 4 (9.