School ager with bilateral abdominal masses

CT of Burkitt lymphoma of kidney
Coronal T1 MRI without contrast of the abdomen (upper left) shows bilateral enlarged kidneys which after the administration of contrast (upper right) is seen to be due to multiple non-enhancing renal masses. Transverse US of the liver (below) shows a round hypoechoic mass in the liver, superior and to the left of the gall bladder.

The diagnosis was Burkitt lymphoma with renal and liver involvement.