Magnetic resonance imaging (MRI) of the abdomen and pelvis. The figure shows mild to moderate hydroureteronephrosis with the presence of calyceal clubbing and tiny cystic areas around the calyces, especially in the lower pole (yellow arrows). Multiple small parenchymal T2 bright cystic regions were also identified with few such areas demonstrating restricted diffusion, suggesting parenchymal micro-abscesses. Differential diagnosis of the possible etiology is graft site candidiasis, actinomycosis, mycobacterium tuberculosis, Citrobacter braakii, and cytomegalovirus (CMV).