Comparative Study of Transurethral Flexible Ureteroscope Lithotripsy and Minimally Invasive Percutaneous Nephrolithotomy in Treatment of Renal Calyceal Calculi.

Objective To investigate the effect of transurethral flexible ureteroscope and minimally invasive percutaneous nephrolithotomy in treatment of renal calyceal stones. Methods The clinical data of 116 cases of solitary renal calyceal calculi were collected, 54 cases accepted transurethral flexible ureteroscope lithotripsy treatment as ureter soft lens group, 62 cases accepted Percutaneous nephrolithotomy treatment as percutaneous nephrolithotomy group. Then we compared the operation time, complications and the success rate between the two groups. Results When the renal calyceal calculi' diameter was greater than 2cm, minimally invasive percutaneous nephrolithotomy lithotripsy group was significantly better than the flexible ureteroscopy group in operation time and success rate, the difference was statistically significant (P< 0.05). When the calculi' diameter was smaller than 2cm in the upper and middle renal calyceal, the lithotripsy successful rate had no significant difference between two groups (P > 0.05), but the operation time of flexible ureteroscope was shorter (P < 0.05). When the calculi' diameter was smaller than 2cm in the lower renal calyceal, minimally invasive percutaneous nephrolithotomy group was obviously better than the flexible ureteroscopy group in operation time and lithotripsy success rate (P<0.05). Conclusions Minimally invasive percutaneous nephrolithotomy should be chosen when the renal calyceal calculi's diameter is greater than or equal to 2cm, regardless the location where it was; when the diameter is smaller than 2 cm, transurethral flexible ureteroscope lithotripsy should be chosen when calculi' is in the upper and middle renal calyceal, while when calculi is in the lower renal calices, minimally invasive percutaneous nephrolithotomy should be the first choice. [ABSTRACT FROM AUTHOR]