RESUMO
We retrospectively analysed the role of indwelling pigtail stent in successful ureteric stone retiveal by second ureterroscopy when first ureteroscopy failed. Over a period of 44 months initial ureteroscopy failed in 41 patients. 32 patients had pigtail stent inserted and 9 were left without any stent. The group with stent, passed stone spontaneously or had stone retrieval on second ureteroscopy in 27 cases [84%] compared with 2 unstented cases [22%]. Ureterolithotomy was done in 5 patients [16%] with stent and 7 cases [78%] without stent. It is concluded that following failed ureteroscpy, insertion of double pigtail stent results in higher subsequent successful ureteroscopic stone removal or spontaneous passage with a lower rate of consequent ureterolithotomy