My uncle had 29 mm kidney stone to which lithotripsy was done and after that infectiin occured due to it ,so he underwent lazer procedure to remove stone , Now they are saying that only three stones are left every stone isspeculated to be of 3-5 mm Stent was inserted , it is still there , doctor asked to come after 15 days Will the threee stones vanish on their own or another sitting of lithrotripsy needed?