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 ) .
C0041952
calculi
C0041951
ureteral