Hydronephrosis
A dilated renal pelvis can be categorized into three main groups, depending on whether it is associated with dilated ureters and/or the bladder.
- Ureteropelvic junction (UPJ) obstruction
- Ureterovesical junction (UVJ) obstruction
- Bladder outlet obstruction
Hydronephrosis: Sagittal scan of the fetal kidney: dilatated renal pelvis (*), and calyces (arrow)
