<s>[INST] sir,recently found kidny stone-a small radiopque opacity measuring about 12mm x s9mm in middle pole of the left kidney on plain radiograph. pel-v1calyceal system is opacified with contrast medium on both sides from 5 minutes radiograph onwards. the calyces are spastic on left sides.pls. advice [/INST] Hello and welcome to HCM, Kidney stones are managed conservatively and surgicalle depending on the size and location of the stone. Small stones or small calculi are managed conservatiley with fluids and medications. Large stones are usually managed by surgical measures. The kidney stone that you have mentioned is too large to be treated by conservative measures and thus surgical measures have to be taken. Thanks and take care Dr Shailja P Wahal </s>