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The Cleveland Clinic

Digestive Diseases: Liver Transplantation

The liver is the body's largest internal organ, weighing about 3 pounds in adults. It is located below the diaphragm on the right side of the abdomen.

The liver performs many complex functions in the body, including:

  • Produces most proteins needed by the body
  • Metabolizes, or breaks down, nutrients from food to produce energy, when needed
  • Prevents shortages of nutrients by storing certain vitamins, minerals, and sugar
  • Produces bile, a compound needed to digest fat and to absorb vitamins A, D, E, and K
  • Produces most of the substances that regulate blood clotting
  • Helps your body fight infection by removing bacteria from the blood
  • Removes potentially toxic byproducts of certain medications

When Is a Liver Transplant Needed?

Liver transplantation is considered when the liver no longer functions adequately (liver failure). Liver failure can occur suddenly (acute) as a result of infection or complications from certain medications or it can be the end result of a long-term problem. The following conditions may result in liver failure.

  • Chronic hepatitis
  • Primary biliary cirrhosis (a rare condition where the immune system inappropriately attacks and destroys the bile ducts causing liver failure)
  • Sclerosing cholangitis (scarring and narrowing of the bile ducts inside and outside of the liver causing the backup of bile in the liver which can lead to liver failure)
  • Biliary atresia (malformation of the bile ducts)>
  • Alcoholism
  • Wilson's disease (a rare inherited disease with abnormal deposition of copper throughout the body, including the liver, causing it to fail)
  • Hemochromatosis (a common inherited disease where the body is overwhelmed with iron)
  • Amyloidosis (abnormal deposits of an abnormal protein called amyloid on the liver that disrupts normal liver function)
  • Liver cancer


Next: How are candidates for liver transplant determined? »

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Liver Transplant

What is ascites?

Ascites is the accumulation of fluid (usually serous fluid which is a pale yellow and clear fluid) in the abdominal (peritoneal) cavity. The abdominal cavity is located below the chest cavity, separated from it by the diaphragm. Ascitic fluid can have many sources such as liver disease, cancers, congestive heart failure, or kidney failure.

What causes ascites?

The most common cause of ascites is advanced liver disease or cirrhosis. Approximately 80% of the ascites cases are thought to be due to cirrhosis. Although the exact mechanism of ascites development is not completely understood, most theories suggest portal hypertension (increased pressure in the liver blood flow) as the main contributor. The basic principle is similar to the formation of edema elsewhere in the body due to an imbalance of pressure between inside the circulation (high pressure system) and outside, in this case, the abdominal...

Read the Ascites article »










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