Components of the Glissonean Pedicle

The Glissonean pedicle consists of three kinds of vessels: portal vein, portal artery, and bile duct.

Glisson's capsule (Fig. 1.1), on the surface of the liver, extends into the liver and covers the portal triads, where it is called Glisson's sheath. Glisson's

Fig. 1.1. Glisson's capsule, shown by the dotted lines

capsule also covers the Glissonean pedicles inside the liver. Therefore, the term "Glisson's sheath" is generally used only to refer to the portion of the Glissonean pedicle inside the liver. Figure 1.2a,b shows the components of the Glissonean pedicle.

In the extrahepatic portion of the Glissonean pedicle, the portal triads in the hepatoduodenal ligament are also enclosed by connective tissue and peritoneum up to the hepatic hilum. The intrahepatic and extrahepatic portions of the portal triads have the same structure anatomically. In other words, the extrahepatic and intrahepatic portal triads can be considered as parts of the same Glissonean pedicle tree.

Fig. 1.2a. The Glissonean pedicle tree, intraoperative photograph. After removing the surrounding liver tissue, care is taken not to damage the vessels, using a Cavitron ultrasonic aspirator (CUSA) on the resected specimen of the right lobectomy. Not visible are arteries, veins, and the bile duct; seen here is the fibroid bundle called the Glissonean pedicle. It consists of two main trunks and several branches of almost the same length, which are bifurcated from the main trunk. The structure is connected to the outside of the liver and hepatoduodenal ligament. This fibroid bundle system is called the Glissonean pedicle tree

Fig. 1.2a. The Glissonean pedicle tree, intraoperative photograph. After removing the surrounding liver tissue, care is taken not to damage the vessels, using a Cavitron ultrasonic aspirator (CUSA) on the resected specimen of the right lobectomy. Not visible are arteries, veins, and the bile duct; seen here is the fibroid bundle called the Glissonean pedicle. It consists of two main trunks and several branches of almost the same length, which are bifurcated from the main trunk. The structure is connected to the outside of the liver and hepatoduodenal ligament. This fibroid bundle system is called the Glissonean pedicle tree

Fig. 1.2b. Components of the Glissonean pedicle
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