Fig. 2From: Efficacy and safety of percutaneous nephrolithotripsy in elderly patients: a retrospective studyA A 74 year old male with staghorn calculi in the left kidney was treated with single channel, 22F, percutaneous nephrolithotripsy. B Most of the calculi were cleared by KUB after operation, and a small amount of residual calculi were found in the kidney. KUB = Kidney, Ureter, and Bladder X-rayBack to article page