Fig. 2
From: Use of rituximab in idiopathic retroperitoneal fibrosis
CT scan of Patient 2 pre-treatment (a) demonstrating a soft tissue mass (arrow) in keeping with RPF partially encasing the aorta, IVC and the right ureter. CT scan performed subsequently in the same patient post treatment (b) demonstrates that the soft tissue representing RPF has almost completely resolved. There is only a small amount of residual tissue (arrow) surrounding the right ureter, which has a stent in place