Fig. 2

A T2-weighted, coronal view. B T2-weighted, axial view. C Fat suppressed sequence, axial view. D Gadolinium enhanced T1, axial view. The formation shows strongly heterogeneous MR-characteristic, mainly cystic (T2-hyperintense) and with hemorrhagic content (T1-hyperintense); there is presence of a relatively thick capsule (possibly a pseudocapsule due to a highly thin and peripherally dislocated parenchyma) and fine septa. After application of contrast material, there is an amplification of the signal at the periphery (capsule/pseudocapsule) of the lesion and in the septa. Mass effect on the upper pole of the right kidney, right hepatic lobe, inferior vena cava, and right renal vein is present