What type of liver lesion is characterized as heterogeneous on ultrasound?

Liver cell adenomas are indeed described as heterogeneous on ultrasound due to their variable composition. These lesions can contain both solid and cystic areas, leading to an irregular echogenic pattern. The presence of these varying components contributes to their heterogeneous appearance, setting them apart from other lesions that may present more uniformly.

In contrast, other types of liver lesions exhibit more consistent echogenicity. For example, hemangiomas are typically homogeneous and may appear hyperechoic on ultrasound due to their vascular nature. Simple cysts are generally anechoic and smooth in appearance, lacking the complexity that characterizes liver cell adenomas. Focal nodular hyperplasia usually has a more homogeneous structure as well but might have a central scar that could affect its appearance depending on imaging techniques.

Understanding these characteristics is essential in differentiating between liver lesions and making accurate diagnoses.