Contrast Enhanced Ultrasound For The Evaluation Of Focal Liver Lesions

Inclusion Criteria: * patients diagnosed with de novo FLL at standard ultrasound * age \> 18 years, male and female gender * informed consent for the contrast enhanced study Exclusion Criteria: * patients with contraindication for contrast enhanced study: subjects with acute cardiac infarction, with class III/IV cardiac insufficiency, with rhythm disorders and pregnant women * Patients diagnosed with simple cysts at standard ultrasound (biliary of hydatid) * Patients with known FLL, for example after percutaneous treatment, in which the contrast study is used for the follow up of the patient.