title: [New classification of ureter by success rate for transurethro-ureteral lithotripsy].
abstract: Between August, 1985 and February, 1987, 4 renal pelvic stones and 49 ureteral stones (28 calculi in the abdominal ureter, 21 in the pelvic ureter) were treated by 55 procedures of transurethro-ureteral lithotripsy (TUL). The success rate for stones in the ureter lying in the paravertebral gutter was 33% (3/9), while those in the ureter overlying the psoas muscle was 85% (17/20). The success rate for calculi impacted at the uretero-vesicle junction was 100% (12/12), and those in the upper part of pelvic ureter was 80% (8/10). Two of 4 renal pelvic stones were successfully fragmented and removed. The overall success rate by the ureterorenoscope was 79% in 53 renoureteral units. Judging from our experience and results of TUL, the stone location seems to be one of the factors affecting the success rate. Thus, we propose a new classification of ureter according to success rate for TUL as follows; uretero-vesical junction, pelvic, psoas, and gutter portion.
authors.affiliation: Department of Urology, Okinawa Red Cross Hospital.
authors.forename: M
authors.initials: M
authors.lastname: Nakayama
mesh_terms: D000328:Adult; D000368:Aged; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D008096:Lithotripsy / Q000379:methods; D008297:Male; D008875:Middle Aged; D014513:Ureter / Q000473:pathology*; D014514:Ureteral Calculi / Q000628:therapy*