Cholestasis

Alternative names

Intrahepatic cholestasis; Extrahepatic cholestasis

Definition

Cholestasis is any condition in which bile excretion from the liver is blocked, which can occur either in the liver or in the bile ducts.

Causes, incidence, and risk factors

There are many causes of cholestasis.

Extrahepatic cholestasis - which occurs outside the liver - can be caused by bile duct tumors, strictures, cysts, diverticula, and other damage. Other potential causes for this type include stones in the common bile duct, pancreatitis, pancreatic tumor or pseudocyst, primary sclerosing cholangitis, and compression due to a mass or tumor on a nearby organ. Other causes may exist.

Intrahepatic cholestasis - which occurs inside the liver - can be caused by sepsis (generalized infection), bacterial abscess, drugs, total parenteral nutrition (being fed intravenously), lymphoma, tuberculosis, sarcoidosis and amyloidosis. Other causes of this form of the disorder include primary biliary cirrhosis, primary sclerosing cholangitis, viral hepatitis (A,B,C, etc.), alcoholic liver disease, pregnancy, Sjogren's syndrome and others.

Please refer to drug-induced cholestasis for further information on medications which may cause this problem.

Symptoms

• Itching
  
• Jaundiced (yellow) skin or eyes
  
• Inability to digest certain foods
  
• Nausea, vomiting
  
• Right upper quadrant abdominal pain
  
• Organ failure in cases of sepsis (but not from cholestasis itself)
  
• Rash or fever in some cases of drug-induced cholestasis
  
• Clay-colored or white stools
  
• Dark urine
  

Signs and tests

Blood tests show elevated bilirubin and alkaline phosphatase blood levels.

Treatment

Treatment requires addressing the underlying illness. When medications are suspected to be the cause of cholestasis, they should be stopped.

Expectations (prognosis)

Prognosis depends on the underlying disease. Primary biliary cirrhosis, primary sclerosing cholangitis, and some forms of hepatitis are treatable to various degrees.

Stents can be placed to open areas blocked by cancers. Cholestasis caused by medication typically resolves but can lead to liver failure.