Amebic liver abscess is a collection of pus in the liver brought on by an intestinal parasite.

Hepatic amebiasis; Extraintestinal amebiasis; Abscess - amebic liver

Amebic liver abscess is caused by Entamoeba histolytica, the same organism that causes amebiasis, an intestinal infection also called amebic dysentery. The organism is carried by the blood from the intestines to the liver.

The disease spreads through ingestion of amebic cysts in food or water contaminated with feces (sometimes due to use of human waste as fertilizer), and through person-to-person contact.

The infection occurs worldwide, but is most common in tropical areas where crowded living conditions and poor sanitation exist. Africa, Latin America, Southeast Asia, and India have significant health problems associated with this disease.

Risk factors for amebic liver abscess include:

• Alcoholism
• Cancer
• Homosexual activity, particularly in men
• Immunosuppression
• Malnutrition
• Old age
• Pregnancy
• Recent travel to a tropical region
• Steroid use

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Liver cell death

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Amebic liver abscess Symptoms

Review Date: 05/30/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)