Hi. Thanks for your query. Since you are a diagnosed case of left lower ureteric calculus, which is impacted in the junction of the ureter with the urinary bladder (Vesico-ureteric junction), you have to undergo a procedure to get the stone out of the system. The back-pressure form the obstructed ureter by a stone has cause the back-pressure to develop the hydroureter and hydro-nephrosis, meaning dilatation of these structures. The methods can be : Ureteroscopy and hammering / extracting the stone Open approach. Putting a stent only to reduce the hydronephrosis and hydroureter so that the kidney on that side remains functioning. This all depends upon the availability of the expertise, availability of specific instruments. Discuss with your Urologist and carry on his advise.