I have a deformed kidney, and almost 3 years ago, had a bad kidney infection. They discovered I had a kidney full if stones, one of which was trapped. They put in a stint, and I had it for 4 months. Then they went in and blasted the stones. I haven't had anymore problems until recently. Ive passed 2 stones in the past month or so, one of them was about 3/4 centimeter. The strange thing is, they haven't been excruciating, like the first time. I didn't even have to take any pain meds and I'm a wuss! Has anyone else had this or know why it's happening? Could it be the stint permanently stretched out my urethra?