The biliary tree is normally relatively free of bacteria because of certain protective mechanisms.

Ultrasonography showed a normal liver, gall bladder, and biliary tree.

These procedures carry the risk of introducing further infection into the biliary tree.

The needle was withdrawn and a guide wire passed into the biliary tree.

Haemobilia after puncture of the biliary tree was seen in patient 6 and settled with conservative management.

Pressure inside in the biliary tree can give rise to gallstones and lead to cirrhosis of the liver.

Invasion along the biliary tree and into the liver is common.

This means waste matter cannot be discarded through the system known as the biliary tree, one of the four major vessels connected to the liver.

In a normal healthy individual with a normally functioning sphincter of oddi there should be no air within the biliary tree.

House continues by saying that she will have something else wrong, most likely hitting her pancreas next as it will spread through the biliary tree.