This is known as enlarged liver, or
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.
The most common cause of enlarged liver is accumulation of fat in the liver. Collection of fat in the liver can a result of obesity and diabetes. This problem has striking similarity with alcoholic hepatitis, but it has been found that such patients do not drink alcohol. Hence, it is known as nonalcoholic steatohepatitis. However, it is not at all necessary that every overweight person will develop enlarged liver problems. Other causes of enlarged liver are viral infection like hepatitis A, hepatitis B or hepatitis C, iron deposition in liver, heavy consumption of alcohol. Serious ailments like diabetes, tuberculosis, liver cancer, congestive heart failure or leukemia can be some other causes of enlarged liver. Inadequate diet and side effects of some drugs are other factors that can lead to enlarged liver.