Pyeloplasty is a type of surgical procedure performed to treat an uretero-pelvic junction obstruction if residual renal function is adequate.

There are different types of pyeloplasty depending on the surgical technique and patterns of incision used.

These include the Y-V, Inverted 'U', and Dismembered types of pyeloplasty.

This was described in relation to retrocaval ureter (now renamed as preureteric vena cava).

Other surgical procedures have been described to widen the PUJ without dismembering the ureter from the renal pelvis.