Focal nodular hyperplasia
Focal Nodular Hyperplasia
Focal nodular hyperplasia (FNH) is a benign condition of the liver characterized by the presence of focal nodules. It is the second most common benign liver lesion, after hemangioma.
Pronunciation
Focal nodular hyperplasia is pronounced as /ˈfoʊkəl ˈnoʊdjʊlər ˌhaɪpərˈpleɪʒə/.
Etymology
The term "focal nodular hyperplasia" is derived from the Latin focalis meaning "of or pertaining to a hearth", nodulus meaning "a small node", and hyperplasia from the Greek hyper meaning "over" and plasis meaning "formation".
Definition
Focal nodular hyperplasia is a benign condition of the liver that is often discovered incidentally during imaging studies. It is characterized by the presence of nodules that are typically less than 5 cm in diameter. These nodules are composed of normal or slightly enlarged liver cells and do not represent a true neoplasm.
Symptoms
Most individuals with FNH are asymptomatic. However, in some cases, symptoms such as abdominal pain, a palpable mass, or jaundice may occur.
Diagnosis
Diagnosis of FNH is typically made through imaging studies such as ultrasound, computed tomography (CT), or magnetic resonance imaging (MRI). In some cases, a liver biopsy may be necessary.
Treatment
Treatment for FNH is typically not necessary unless symptoms are present. In cases where symptoms do occur, surgical resection may be considered.
Related Terms
- Liver
- Hemangioma
- Ultrasound
- Computed tomography
- Magnetic resonance imaging
- Liver biopsy
- Surgical resection
External links
- Medical encyclopedia article on Focal nodular hyperplasia
- Wikipedia's article - Focal nodular hyperplasia
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