What condition is characterized by pus in the liver due to infection?

• A. Pyogenic liver abscess
• B. Amebic liver abscess
• C. Hepatic steatosis
• D. Focal nodular hyperplasia

Answer: (A)

Pyogenic liver abscess is characterized by the presence of pus within the liver due to a bacterial infection. This often occurs when bacteria from another site in the body enter the liver, leading to localized infection and the formation of an abscess filled with pus. Common causes can include complications from biliary tract infections, appendicitis, or diverticulitis that allow bacteria to spread to the liver.

In contrast, an amebic liver abscess is caused by the parasite Entamoeba histolytica and is not classified as a pus-filled abscess; instead, it might contain necrotic liver tissue and is associated with amoebic infection. Hepatic steatosis refers to the accumulation of fat in liver cells, which is a metabolic condition and not infectious. Focal nodular hyperplasia is a benign liver tumor that does not involve infection or pus formation. Thus, the defining element of a pyogenic liver abscess is the presence of bacterial infection resulting in pus accumulation, which distinguishes it as the correct answer for this condition.