Hi ive had a staghorn kidney stone for some time now.i had 5 treatments where they go through your water works and lazer the stone.but they could only grt 40% they then inserted a stent that was left in way far to long and it became in crusted and stuck. So i had to have i think its called a pcnl.it took them nearly 7hrs and still i have some stones left.im teally concerned about all this anesthetic and the ct,mri scans ive been having.im sorry this is so long winded i just dont know where or what i should do Yours faithfully Alicia williams