Stone formations multiple places and recurrent
This 4 years female child had surgery for 23mm bladder stone at 18 months age. Stone analysis was suggestive of mainly Xanthine stone
Before six month she underwent PCNL for right renal stones.
Those were mainly calcium oxalate monohydrate stones.
Now six months later she has recurrence of stone on right side.
What can be the underline issues?
For what and how she should be evaluated to get upto the underlying issues?