This case was presented at the annual symposium of the Korean Endourological Society in 2016.

1. To achieve complete stone-free status with fURS/cysto 2. AIRS (Antegrade IntraRenal Stricture/Stone surgery) 3. Renal and ureter stones together 4. Bilateral stones 5. Cardiovascular risk (supine) 6. Impacted UPJ stones 7. Etc.

I decided to perform ECIRS on the left side, but there were remnant stones in the leftt upper pole after a 110-min procedure of ECIRS. I planned to perform the salvage RIRS as the 2nd procedure.

I performed ECIRS on the right side and completely removed the right kidney stones. After that, I performed the salvage RIRS for remnant stones in the left kidney. Complete stone-free status was achieved.