What is segment 8 in the liver?
Segment 8 corresponds to the anterosuperior portion of the right paramedian sector according to Couinaud’s classification1 or the anterosuperior subsegment of the right lobe in Healey and Schroy’s classification,2 which lies between the middle and the right hepatic veins.
What are the 8 lobes of the liver?
Lobes of liver
- Right lobe of liver.
- Left lobe of liver.
- Quadrate lobe of liver.
- Round ligament of liver.
- Falciform ligament.
- Caudate lobe of liver.
- Inferior vena cava.
- Common bile duct.
What is the significance of the hepatic segments?
It is the preferred anatomy classification system as it divides the liver into eight independent functional units (termed segments) rather than relying on the traditional morphological description based on the external appearance of the liver.
What is the hepatic lobe?
The liver has two lobes — the right and the left. Each lobe is made up of thousands of hexagonally-shaped lobules. These lobules are very small. Each lobule is made up of numerous liver cells, called hepatocytes, that line up in radiating rows. Between each row are sinusoids.
What is the function of caudate lobe?
The caudate lobe (segment I) is the autonomous zone of the liver. It receives portal venous, as well as hepatic arterial, blood from both branches of the aforementioned vessels. Additionally, its biliary drainage is by both branches of the hepatic ducts and its venous return goes directly into the inferior vena cava.
What does the caudate lobe of liver do?
The caudate lobe represents the only part of the liver that is in contact with the vena cava, except at the entrance of the main hepatic veins into the vena cava, and provides an anastomosis between the hepatic veins and vena cava.
How liver is divided into segments?
The middle hepatic vein divides the liver into left and right lobes. The left hepatic vein divides the left lobe into lateral (2, 3) and medial (4a, 4b) segments. The right hepatic vein divides the right lobe into anterior (5, 8) and posterior (6, 7) segments.
How common are lesions on liver?
Liver lesions are abnormal clumps of cells in your liver, and they are very common. They will be detected in as much as 30% of people over 40 who undergo imaging tests. 1 The majority of liver lesions are benign (not harmful) and don’t require treatment.