Routine use of ultrasonography in general pediatric practice, even following very mild and
nonspecific abdominal symptoms, has dramatically increased the detection of focal hepatic
lesions. They range from entirely benign incidental lesions to malignant tumors (Box 1) and
on most occasions warrant further diagnostic work-up, including axial radiological imaging
(multiphasic computed tomography [CT], magnetic resonance imaging [MRI]), and specific
serologic tumor markers.