kidney (renal) stones

Q | can all kidney stones be dissolved?

A | No. Only stones made up of uric acid can be dissolved effectively by changing the acidity of the urine. These stones are formed as a result of the breakdown of products from a high protein diet becoming supersaturated in the urine, causing stones to grow.

Uric acid stones are peculiar in that they are translucent (invisible) on normal X-ray pictures. They can, however, be seen on CT scans.