The document provides information about the embryogenesis, anatomy, vascular supply, imaging modalities, and various surgical conditions of the liver. It discusses how the liver primordium appears in the 4th week of development and differentiates into hepatic cells. The liver's segmentation and blood supply from the hepatic artery and portal vein are described. Common benign and malignant primary tumors of the liver are summarized, including their risk factors, clinical features, diagnosis, and treatment.