1. Categories: Genitourinary, Lithotomy Tools, Bistouries A rare 18th century bistoury cache, literally hidden knife, used for lithotomy which involved cutting into the bladder to remove stones

2. 9 Results:The lithotomy successful ratio in the upper ureter was 100%(27/. Calculi of 2 cases moved upward into renal calices and were treated by choledochofiberscope.