Primary biliary cirrhosis


'''Primary biliary cirrhosis''' is an autoimmune disease of the liver marked by the slow progressive destruction of the small bile ducts within the liver. When these ducts are damaged bile builds up in the liver (cholestasis) and over time damages the tissue. This can lead to scarring, fibrosis, cirrhosis. and ultimately liver failure. It is a rare disease, about 200 out of a million; 10 to 1 women to men, although different references vary widely on these numbers.

Signs and symptoms

The following signs may be present in PBC:

Diagnosis

To diagnose PBC, distinctions should be established from other conditions with similiar symptoms, such as autoimmune hepatitis or primary sclerosing cholangitis (PSC). Diagnostic blood tests include: Abdominal ultrasound or a CT scan is usually performed to distinguish between the various possible causes. Ideally, everyone suspected of PBC should have a liver biopsy, and - if uncertainty remains - endoscopic retrograde cholangiopancreatography (ERCP, an endoscopic investigation of the bile duct).

Etiology

The cause of the disease is unknown at this time, but research indicates that there is an immunological basis for the disease, making it an autoimmune disorder.

Therapy

There is no known cure, but medication may slow the progression so that a normal lifespan and quality of life may be attainable. Ursodeoxycholic acid is one, which helps reduce the cholestasis. To relieve itching caused by bile acids in circulation, which would normally be removed by the liver, cholestyramine (a bile acid sequestrant) may be prescribed to absorb bile acids in the gut and be eliminated, rather than enter the blood stream. As in all liver diseases, alcoholic beverages are contraindicated. In advanced cases, a liver transplant, if succesful, is said to have excellent prognosis.

References

Medical

General

Category:Gastroenterology Category:Autoimmune diseases
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