Fig 3. A and B, Follow- up axial FDG PET/CT scan images of
right renal mass and mediastinal lymph nodes in a patient with renal
Rosai–Dorfman disease. (A) The tumor in the right renal pelvicalyceal
system (arrow) shows increased uptake (SUVmax: 13.3) as
well as (B) few renal cortical foci (arrow) with mild uptake
(SUVmax: 6.3).