Where are the segments of the liver?
Where are the segments of the liver?
The portal vein divides the liver into upper (2, 4a, 8, 7) and lower (3, 4b, 5, 6) segments, and can usually be identified without IV contrast. A line drawn from the middle of the gallbladder fossa to the IVC (green) roughly divides the liver into left and right lobes.
How are liver segments divided?
The left hepatic vein divides the left liver into medial and lateral segments. The portal vein divides the liver into the upper and lower segments (Fig. 8).
What are the lobes and segments of the liver?
The human liver is divided grossly into four parts or lobes. The four lobes are the right lobe, the left lobe, the caudate lobe, and the quadrate lobe….
| Lobes of liver | |
|---|---|
| Latin | lobus hepatis |
| Anatomical terminology |
Why is the liver divided into sections?
The division of the liver into independent units means that segments can be resected without damaging the remaining segments. To preserve the viability of the liver following surgery, resections follow the vessels defining the peripheries of each segment.
What is Segment 5 of the liver?
segment 5 (V) is located below the portal plane between the middle and right hepatic veins. segment 6 (VI) is located below the portal plane to the right of the right hepatic vein. segment 7 (VII) is located above the portal plane to the right of the right hepatic vein.
Where is Segment 5 of the liver?
What are the 4 lobes of the liver?
Anatomically the liver has four lobes: right, left, caudate, and quadrate. The quadrate lobe is located on the inferior surface of the right lobe. The caudate lobe is located between the left and right lobes in an anterior and superior location.
Where is segment 7 in the liver?
Right lobe Segments V to VIII make up the right part of the liver: Segment V is the most medial and inferior. Segment VI is located more posteriorly. Segment VII is located above segment VI.
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 segments of the liver?
Cantle’s line: run from middle of gall bladder fossa anterior to Inferior venacava posteriorly
How many segments does the liver have?
The liver has two main portions, also called lobes. Each lobe is further divided into eight segments. Each segment has an estimated 1,000 lobules, also called small lobes. Each of the lobules has a small tube — a duct — that flows into other ducts that joins to become the common hepatic duct.
What are liver segments?
The liver is divided into three functional lobes: the right lobe, the left lobe, and the caudate lobe. The right and left lobes are further divided into 2 segments each: The anterior and posterior segments of the right lobe. The medial and lateral segments of the left lobe.
What are the lobes of the liver?
The lobes of the liver include the left lateral, left medial, right lateral, right medial, quadrate, caudate and papillary. The coronary ligament attaches the liver (from the diaphragmatic surface) to the diaphragm. It is an irregular fold of peritoneum. It surrounds the triangular base of the diaphragmatic surface.
