- It is important to know the location of
the sub-segments of the liver. In order to perform segmental or
subsegmental resection of the liver, the surgeon must know exactly which
parts of the liver are diseased so that vascular supply and venous and
biliary drainage can be preserved. Knowing the subsegments helps the
radiologist communicate with the surgeon.
- 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
- These 4 segments are further divided
into 8 subsegments:
- The superior anterior and superior
posterior subsegments of the right lobe
- The inferior anterior and inferior
posterior subsegments of the right lobe
- The superior medial and superior
lateral subsegments of the left lobe
- The inferior medial and inferior
lateral subsegments of the left lobe
- The caudate lobe is positioned
posteriorly and is separated from the remainder of the liver by the
fissure for the ligamentum venosum.
|
