Ultra-Mini Percutaneous Nephrolithotomy During Foreign Body Extraction from Renal Pelvis to Treat a Forgotten Ureteral J Stent

Abstract

Abstract Introduction: To eliminate the disadvantages of conventional percutaneous nephrolithotomy (PNL), smaller diameters of instruments had been invented, and Helal and colleagues described minimally invasive percutaneous nephrolithotomy (miniPNL). They performed sequential dilatation up to 16F and used for pediatric population in 1997.1 In 1998, Jackman and colleagues performed 13F miniPNL first in adult patients with smaller sheaths and instruments.2 Today, the miniPNL is generally defined for the PNL procedure performed through the access tract smaller than 18F.3 Ultra-minimally invasive PNL (UMP) was first described by Desai and colleagues using a novel 6F mini nephroscope through an 11F to 13F metal sheath to perform holmium:YAG laser lithotripsy.4 Foreign bodies such as forgotten ureteral J stents especially upper parts of the stents can be removed through percutaneous access. UMP can be the safest method if ureterorenoscopy is not useful. Materials and Methods: In this video, we present a 32-yea...