Appearances of the circumcaval ureter on excretory urography and MR urography: A single-center case series
A 41-year-old man presented with dysuria of 6 months duration. Ultrasound showed right-sided hydronephrosis with a prominent pelvis, the ureter not traceable. IVU showed right grade 2 hydronephrosis, and the “reverse J” shape of the collecting system suggested circumcaval course of the ureter. MRU showed grade 2 obstruction due to hooking of the proximal ureter around the IVC []. This was well made out on both coronal MIP images and axial source images.