You may, however, be in pain and notice that you seem to be “leaking” pus, blood, or poop. In many cases, you could be dealing with both an abscess and a fistula, as they often occur together.

An abscess is an enclosed area of pus within the body. Liver abscesses usually form due to a leak in the bowels that reaches the liver via the portal vein, which transports blood from abdominal ...