What is a common characteristic of focal nodular hyperplasia of the liver?

Focal nodular hyperplasia (FNH) of the liver is characterized by being asymptomatic and often discovered incidentally during imaging studies for unrelated reasons. This benign lesion typically does not cause symptoms because it is composed of hyperplastic liver tissue without significant cellular atypia or malignant potential.

Patients usually present without complaints, and the condition is often only identified during abdominal ultrasounds, CT scans, or MRIs. This distinguishes it from other liver lesions, which may present with symptoms or complications. The lack of symptoms is a key aspect of FNH, making option B the most accurate summary of its common characteristics.

Although FNH can sometimes show signs on imaging, such as a well-circumscribed mass, it is fundamentally different from malignancies and other liver pathologies that may be associated with chronic liver disease or cause significant abdominal pain, neither of which are typically linked to FNH.