Types of Stones
major factor in urolithiasis in children and adults is the production
of insoluble calcium salts of oxalic acid. Hypercalciuria is the
most common metabolic disorder associated with calcium oxalate stones,
occurring in 30-60% of patients. Hypercalciuria is associated with
a variety of metabolic disorders, including intestinal hyperabsorption
(absorptive hypercalciuria), impaired renal calcium reabsorption
(renal hypercalciuria) and increased skeletal demineralization (resorptive
hypercalciuria). The urinary and blood chemistries that characterize
these differing groups are summarized in the Table below (click
table to enlarge).
Rumi LA, Pearle MS, Pak CYC. Medical therapy: Calcium oxalate urolithiasis.
Urol Clin North Am 1997, 24:1:117-133.