[Imaging of hepatic tumors in children and adolescents].

backgroundPediatric liver tumors are relatively rare, but thorough knowledge of their imaging features is still important.

objectivesFrequency and imaging features of benign and malignant liver masses during childhood and adolescence. MATERIALS AND

methodsDiscussion of relevant original articles, review manuscripts and expert recommendations concerning imaging of childhood liver tumors.

resultsThe most common malignant tumors of the liver are hepatoblastoma, which usually occur in younger children, as well as in some regions hepatocellular carcinoma. In contrast to most benign masses, such as focal nodular hyperplasia, simple cysts or fatty liver infiltrations, their imaging morphology is not very characteristic. Radiologically, sonography and magnetic resonance imaging (MRI) are used for assessment. Both methods benefit from intravenous contrast agent administration.

conclusionsChildhood liver tumors show a broad spectrum of morphological manifestations. Some entities can be characterized using standard imaging, some require multimodal imaging or histological assessment. In addition to morphological imaging criteria, age and the medical history as well as laboratory data play an important role in establishing the correct diagnosis.