Appearances of the circumcaval ureter on excretory urography and MR urography: A single-center case series
A 20-year-old man presented with intermittent right flank pain for 1 year and dysuria for 1 week. Sonography revealed right-sided hydronephrosis, and excretory urography showed a mid-ureteric medialization with grade 4 hydronephrosis and the rest of the ureter was not visualized. MRU was subsequently performed, which showed the right upper ureter conically dilated and tapering into a normal caliber ureter that made an S-shaped curve around the IVC.