What Is It?
No body organ performs a wider variety of essential jobs than the liver. It:
- Produces essential clotting factors in blood
- Removes or neutralizes poisons, drugs and alcohol
- Manufactures bile that helps the body to absorb fats and cholesterol
- Helps to maintain normal blood sugar concentrations
- Regulates several hormones
Cirrhosis is a disease in which normal liver cells are replaced by scar tissue, which interferes with all of these important functions. In extreme cases, the damage is so severe that the only solution is a liver transplant. Cirrhosis is the eighth leading cause of death by disease in the United States, killing 25,000 people each year. It impairs thousands of other people as the liver gradually loses its ability to function.
Cirrhosis has many causes. In the United States and Europe, the most common causes are excessive alcohol use and chronic infection with the hepatitis C virus.
Alcoholic cirrhosis tends to develop after a decade or more of heavy drinking, although it is possible for “social drinkers” to have cirrhosis. Alcohol has a toxic effect on liver cells. It is not known why some people are more prone to adverse reactions than others, but women are at greater risk for cirrhosis, even when they consume less alcohol than men.
Chronic hepatitis C causes inflammation of the liver that eventually can lead to cirrhosis. One out of every five people with chronic hepatitis C develops cirrhosis after 20 years. Chronic hepatitis B, which causes damage in a similar way, is the leading cause of cirrhosis in the world but is less common in Westernized countries. Hepatitis D is found only in people who already have hepatitis B.
Rarer causes of cirrhosis include:
- Autoimmune diseases that attack the bile ducts or liver cells
- Severe reactions to prescription drugs
- Prolonged exposure to environmental toxins
- Infections from bacteria and parasites usually found in the tropics
- Repeated episodes of heart failure with liver congestion.
Another cause is nonalcoholic steatohepatitis (NASH), which causes fat to build up in the liver and produces scarring.
Several rare, inherited diseases can lead to cirrhosis. These diseases include:
- Hemochromatosis, which is an excess accumulation of iron in the liver and other organs
- Wilson’s disease, which produces abnormal concentrations of copper
- Alpha1-antitrypsin deficiency, which is the absence of a particular enzyme in the liver
In its early stages, cirrhosis often has no symptoms. But as liver cells die, the organ makes less of the proteins that regulate fluid retention and blood clotting, and loses its ability to metabolize the pigment bilirubin. The resulting symptoms and complications include:
- Loss of appetite
- Nausea and vomiting
- Weight loss
- Fluid accumulation in the legs (edema) and abdomen (ascites)
- Increased bleeding and bruising
- Jaundice, a yellowing of the skin and eyes
As damage increases, the liver fails to detoxify the blood and it becomes less able to metabolize many medications, which magnifies their effects. Eventually, toxins build up in the brain. These changes can produce:
- Increased sensitivity to drugs
- Personality and behavioral changes, including confusion, neglect of appearance, forgetfulness, trouble concentrating or changes in sleep habits
- Loss of consciousness
Scarring also impedes blood flow and increases pressure in the portal vein, a condition called portal hypertension. Blood vessels in the stomach and esophagus swell and the body creates new ones in an attempt to bypass the liver. These vessels, called varices, have thin walls, however. If one bursts, the resulting hemorrhage can cause death in a matter of hours.
Your doctor will ask about your medical history, family history of liver disease, diet, alcohol consumption, medications you are taking and risk factors for hepatitis B and C, such as intravenous drug use. During a physical examination, the doctor determines whether the liver feels harder or larger than normal, looks for skin changes such as bruising and jaundice and looks for evidence of fluid swelling in the legs or abdomen.
Blood tests may be ordered to look for evidence of a buildup of toxins or reduced levels of essential substances made by the liver. The liver may be viewed using a computerized tomography (CT) scan, ultrasound or a harmless radioactive highlighting substance called a radioisotope. Cirrhosis may be confirmed through a biopsy, in which a tiny sample of liver tissue is removed and then examined for scarring and damage to cells.
Cirrhosis is a progressive disease that cannot be reversed or cured, but damage in many cases can be halted or slowed down with treatment or changes in behavior.
The most important step you can take to prevent cirrhosis is to avoid excessive drinking. It is best to consume an average of no more than two alcoholic drinks a day for men or one drink a day for women. If you have chronic hepatitis or other liver problems, avoid alcohol completely.
Some other causes of cirrhosis can be prevented. To avoid infection with hepatitis B and C, do not inject illegal drugs, snort cocaine or have unprotected sex, especially with multiple partners. If you are considering body piercing or tattooing, make sure that the equipment is cleaned properly. Health-care and emergency workers should follow infection-control precautions carefully whenever they are exposed to blood. Hepatitis B also is preventable by vaccine, a series of three shots that is 90 percent effective.
Treatment for cirrhosis varies depending on the cause and stage of the disease. Because liver damage cannot be reversed, the aim of all treatment is to keep the disease from getting worse and to reduce complications.
Regardless of the cause, all cirrhosis patients should abstain from alcohol and use caution in taking medications that can exacerbate liver disease, including over-the-counter acetaminophen (Tylenol and generic types). You also will be treated for underlying diseases — for example, interferon for viral hepatitis, corticosteroids or other immunosuppressant medications for autoimmune hepatitis, and phlebotomy, which is the periodic removal of a pint of blood — to reduce iron levels in hemochromatosis.
Much of the treatment is directed at complications. Your doctor may recommend a low-sodium diet or diuretics to reduce fluid in the body. Laxatives may hasten the removal of toxins. Medications can be prescribed for itching and infections. Blood pressure medicines may help to control portal hypertension.
Bleeding varices can be treated in several ways. They may be tied off with a rubber band or compressed with an inflated balloon to stop the bleeding. In sclerotherapy, the vessel is injected with a chemical that causes it to scar and wither away. Transjugular intrahepatic portosystemic shunt (TIPS) involves creating a new passageway for blood by inserting a tube, or shunt, through the scarred liver to take pressure off the varices. Drugs also may be prescribed to reduce the likelihood of bleeding.
If the liver is too scarred to function, a transplant is the only treatment. Approximately 80 percent to 90 percent of patients survive liver transplantation, and long-term survival rates have improved because of drugs such as cyclosporine (Neoral, Sandimmune) that suppress the immune system to keep it from attacking the new liver.
When To Call A Professional
If you are vomiting blood, go to the emergency room immediately. Otherwise, visit your doctor if you have any of the symptoms of cirrhosis, particularly if you are a heavy drinker or have chronic hepatitis. Patients who already have been diagnosed with cirrhosis should see a doctor promptly if symptoms get worse or if they become disoriented or develop a fever or abdominal pain.
Treatment leads to improvement in most cases when the disease is discovered in its earlier stages. Most patients are able to live a normal life for many years. The outlook is less favorable if liver damage is extensive or if someone with alcoholic cirrhosis does not stop drinking. Either bleeding or loss of brain function can cause death in cirrhosis patients. Patients with cirrhosis also are more likely to develop serious infections and are susceptible to kidney dysfunction and failure.
Diseases and Conditions Center
All ArmMed Media material is provided for information only and is neither advice nor a substitute for proper medical care. Consult a qualified healthcare professional who understands your particular history for individual concerns.