Figure 1.

Representative computed tomography images used to evaluate the Mayo Adhesive Probability score. The method for measuring the amount of fat around the kidney at the location of the renal vein is as follows: (A) None: 0 points. The tissue surrounding the kidney appears completely black on this computed tomography image, with no visible fat stranding. (B) Mild/moderate (type 1): 2 points. The image shows dense areas around the kidneys, but there are no signs of inflammation. (C) Severe stranding (type 2): 3 points. The image depicts a significant accumulation of tissue around the kidney, with thick, dense bars indicating inflammation. P: Posterior perinephric fat thickness (cm); RV: renal vein.