Subsequent MRI demonstrates a 1.8 cm exophytic mass arising from the posterior interpolar region of the right kid. The mass demonstrates decreased signal on T2WI and isointense signal on T1WI. On post contrast substraction images, the mass demonstrates minimal arterial phase hyperenhancemnt with progressive increased enhancement on delayed images. No fat or restricted diffusion was seen associated with the mass.
There are multiple bilateral simple and hemorrhagic renal cysts.