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Biliary Tree 

Biliary Tree
Biliary Tree

Jad M. Abdelsattar

, Moustafa M. El Khatib

, T. K. Pandian

, Samuel J. Allen

, and David R. Farley

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date: 18 May 2021

The biliary tree forms in the endodermal diverticulum of the caudal foregut. The left and right hepatic ducts drain the hepatic sinusoids and join to form the CHD, which joins the cystic duct to form the CBD. Hepatocytes produce bile, which passes through ducts and empties into the CHD and into the GB for storage. Small gallbladder stones occasionally descend into the CBD. Dilatation of the CHD (>4 mm) or CBD (>7 mm) is diagnosed with US. Patients with cholangitis should be resuscitated, given broad-spectrum antibiotics, and have the biliary tree drained with ERCP in preparation for cholecystectomy. ERCP can result in hemorrhage, injury to the duodenum, and pancreatitis.

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