So, this 6mm kidney stone that got pushed back into the kidney is still there. As long as it doesn't move I'm okay, but of course that could happen at any time and its rather large to pass on its own. Doctor says I have a choice - leave it and hope it stays put or have lithotripsy, in which they blast the stone with sonar waves and hopefully break it up. That procedure has an 80% chance of success - if it works the stone will break up into small pieces and hopefully pass. Has anybody had this done? If so what was your experience?