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By Mayo Clinic staffNormally, an adult liver is about the size of a small football. Sometimes, however, the liver becomes enlarged. This is known as enlarged liver, or hepatomegaly (hep-uh-to-MEG-uh-le).
Enlarged liver isn't a disease. It's a sign of an underlying problem, such as hepatitis, congestive heart failure or cancer. Treatment of an enlarged liver depends on the cause.