Focal Nodular Hyperplasias (FNH) refers to a benign liver condition characterized by the development of one or multiple nodules in the liver tissue. These nodules consist of an abnormal growth of liver cells, known as hepatocytes, along with the presence of bile ducts and connective tissues. FNH is typically discovered incidentally during imaging tests conducted for unrelated medical reasons.
The exact cause of focal nodular hyperplasias remains uncertain, although it is believed to arise from abnormalities in the liver's blood supply. It is commonly seen in younger individuals, with a higher prevalence in women. FNH is generally asymptomatic, with most patients being unaware of the condition.
Typically, diagnosis of FNH is made through imaging studies like ultrasound, CT scans, or MRI. These tests help visualize the characteristic features of the nodules, such as a central scar that can be seen as a bright area on imaging. Biopsy is typically not required for diagnosis unless there is uncertainty or suspicion of malignancy.
Focal nodular hyperplasias often require no treatment or intervention unless the nodules become unusually large, leading to pain or discomfort. In rare cases, surgery may be recommended to remove the affected part of the liver, particularly if the diagnosis is uncertain, or if symptoms persist or worsen.
Overall, focal nodular hyperplasias are a benign condition that do not pose significant risks to liver function or overall health. Regular monitoring through imaging tests is usually recommended to ensure there are no changes or developments that warrant further medical intervention.
