"Which comes first, the chicken or the egg?"
So the question is "Which comes first, the stricture of the stone?
Sometimes we don't know if the stone caused the stricture or viceversa.
In this video we show a stone laser fragmentation over a ureteral stenosis without traumatize it.
www.alessandrocalarco.com
tel +39 366 6856844
![](https://i.ytimg.com/vi/ybs_M4EgVpY/mqdefault.jpg)