What is intrahepatic and extrahepatic cholestasis?

What is intrahepatic and extrahepatic cholestasis?

Cholestatic jaundice can thus be classified into intrahepatic or extrahepatic cholestasis, depending upon the level of obstruction to bile flow. Intrahepatic cholestasis or functional cholestasis can be due to a disease involving the liver parenchymal cells and/or the intrahepatic bile ducts.

What is intrahepatic and extrahepatic biliary ductal dilatation?

When the diameter of the left or right hepatic duct exceeds the normal range, and/or with widening of the level-2 and -3 bile ducts, the condition is called intrahepatic bile duct dilatation. An intrahepatic bile duct diameter of 5 mm is called mild, 5-9 mm moderate, and >9 mm severe dilatation.

Is hilar cholangiocarcinoma intrahepatic or extrahepatic?

Although hilar cholangiocarcinomas (Klatskin tumors) are extrahepatic cholangiocarcinomas, the second edition of the ICD-O (ICD-O-2) assigned them a histology code 8162/3, Klatskin, which was cross-referenced to intrahepatic cholangiocarcinoma.

What does intrahepatic mean?

Intrahepatic: Within the liver. For example, a liver tumor is an intrahepatic growth.

What is extrahepatic biliary system?

A duct (tube) that is outside the liver and carries bile from the liver and gallbladder to the small intestine. The extrahepatic bile duct includes the perihilar bile duct and the distal extrahepatic bile duct. The extrahepatic bile duct is part of the biliary system.

What is extrahepatic biliary atresia?

Extrahepatic biliary atresia is defined as partial or total absence of permeable bile duct between porta hepatis and the duodenum. The incidence varies from 1:8,000 to 1:10,000. Cholestasis is total and permanent. 131I Rose Bengal test and needle liver biopsy allow correct identification of 95% of cases before surgery.

What is intrahepatic duct dilatation?

HG Dilated bile ducts are usually caused by an obstruction of the biliary tree, which can be due to stones, tumors (usually of either the papilla of Vater or the pancreas), benign strictures (due to chronic pancreatitis or primary sclerosing cholangitis), benign stenosis of the papilla (ie, papillary stenosis), or a …

What is intrahepatic biliary dilatation?

Biliary dilatation (also called dilation) is a procedure to stretch bile ducts that are too narrow. Bile, a substance that helps in the digestion of fats, is made in the liver and stored in the gallbladder.