RIRS procedures were performed in a single session to remove bilateral renal stones. - Rt kidney: a large lower pole stone with a steep infundibulopelvic angle - Lt kidney: lower pole stones and a diverticular stone in the midpole portion

- Discussion: RIRS in a single session? Mini-PCNL for lower pole stone? Initial ureteroscopic insertion? Use of guidewires and an access sheath? Dusting vs basketing? Etc.