Fatty infiltration of the liver has been associated with obesity. Fatty liver is a common condition that affects 2 to 5 per cent of adult Americans and in some cases, up to 20 per cent of obese individuals may also suffer from a more advanced form of the disease, called NASH. However, there are a number of risk factors that could increase the risk of this condition. Here are some of the most common causes. In addition to obesity, exposure to certain occupational chemicals may cause the disease.
One study found that focal fatty infiltration of the liver was present in 9.2% of patients. It is rare in children younger than five years. Fatty infiltration of the liver is a diagnosis of exclusion and further evaluation is recommended for lesions that show findings that suggest the presence of disease. A low-attenuation region adjacent to the gall bladder, falciform ligament, or porta hepatis is a reliable marker of focal fatty infiltration of the liver.
The presence of focal fatty infiltration of the liver can also be caused by flow-related pseudolesion, which mimics a fatty infiltration of the liver. This type of fatty infiltration can be observed during the hepatic arterial phase of helical scanning and is associated with the dual blood supply to some portions of the liver. This study also included patients with liver cirrhosis and other fatty liver diseases.