Kidney Stone in a Patient with an Ileal Conduit.

The advantage of a retrograde over an antegrade approach in ileal conduit diversion is the lower morbidity. Furthermore, in cases in which there are bone deformities and no ureteral reflux from the reservoir into the upper tract, percutaneous access can be challenging. Thus, a retrograde approach should be considered as the first-line option for the treatment of renal stones in patients with an ileal conduit, but the urologist should keep in mind that an antegrade or combined approach may be possible in the case of failure.