Ureteropelvic Junction Obstruction (UPJO)

Kidney drainage is impaired

Can be seen as Hydronephrosis on Kidney Ultrasound

Often requires MAG3/Dynamic Renal Scan Test

Often requires surgery (Pyeloplasty)

Ureterovesical Junction Obstruction (UVJO)

Kidney drainage is impaired and so is the drainage of the Ureter

Can be seen as Hydronephrosis and Hydroureter on Kidney Ultrasound

Often requires surgery (Reimplantation of Ureter)

Ureteral Duplication

Two tubes drain the kidney on one side

Tubes may insert wrongly causing blockage or backup of urine

Ureterocele

Tube that connects kidney to bladder has balloon on one end

May cause blockage and require surgery

Megaureter

May be due to urine going backwards

May be due to drainage problem

May or may not require surgery

Urethral Stricture

Typically only seen in boys

May be due to previous surgery (for example Hypospadias repair)

May be due to STDs

May require more surgery to repair

Different from Meatal Stenosis (small pee hole in circumcised boys)