Thank you for your query,
is palpable in children1 to 1.5 cm below the costal margin and the extent of enlarged liver from rib margin is important to say whether it is significant or not.
So clinical examination to see the liver enlargement, and investigations like X-ray, ultrasound
abdomen, and liver function test to be done to know the involvement of the liver to rule out any structural, functional problems like hepatitis
Hope I have answered your query.