Causes of Liver Abscesses
A variety of factors can cause liver abscesses:
- Bacterial Infection: Bacterial infections are the most common cause of liver abscesses. These infections can reach the liver through the bloodstream, from the bile-draining tubes, or direct extension from nearby organs.
- Parasitic Infection: Parasites, particularly Entamoeba histolytica and Echinococcus species, can also lead to liver abscess formation. These infections are more common in areas with poor sanitation and are often associated with travel to endemic regions.
- Fungal Infection: Fungal liver abscesses are less common and usually occur in individuals with weakened immune systems, such as those with HIV/AIDS or cancer, or people taking immunosuppressive drugs.
- Biliary Tract Diseases: Conditions that affect the bile ducts, such as cholangitis or bile duct obstruction, can lead to the development of liver abscesses. These conditions disrupt the normal flow of bile, creating an environment conducive to bacterial growth.
- Trauma or Intervention: Direct injury to the liver, surgical procedures, or medical interventions such as liver biopsy can introduce infections leading to abscess formation.