<prompt> Best for management of a 3 cm stone in renal pelvis without evidence of hydronephrosis is?ESWLPCNLAntegrade PyeloplastyRetrograde pyeloplasty  <response>: ESWL- done for stone less than 2.5 cm size PCNL-if stone is 2.5 cm will treat by PCNL Most common kidney stone calcium oxalate Etiologyidiopathic hypercalciuria 