**2. Liver anatomy**

The liver is a wedge-shaped abdominal organ and is located in the right hypochondrium and epigastrium and may extend into the left hypochondrium [9, 10]. It is covered by fibrous Glisson's capsule and is attached to the surrounding structures and the abdominal wall by several ligaments (falciform, coronary, triangular, hepatoduodenal and hepatogastric ligaments). It is divided into two lobes (right and left) by the falciform ligament, while two "accessory" lobes, the caudate and quadrate lobe, arise from the right lobe. The liver has unique double blood supply from the proper hepatic artery (25%) and portal vein (75%). Venous drainage is achieved through hepatic veins (right, middle, left) to the inferior vena cava.
