Renal Calculi (Kidney Stones)  Types of Renal Calculi  There are
five types of kidney stones:  1. Calcium phosphate stones  2.
Calcium oxalate stones  3. Struvite stones - Magnesium ammonium
phosphate  4. Uric acid stones - Result from a problem
metabolizing purines (the chemical base of adenine, xanthine,
theobromine [in chocolate] and uric acid). They may form in a
condition such as gout.  5. Cystine stones - Rare- Result from a
hereditary inability to reabsorb cystine. Most children's stones
are this type.    Symptoms of kidney stones include    • Pyuria:
pus (white blood cells) in the urine.   • Abdominal distension.
• Nausea/vomiting: embryological link with intestine –
stimulates the vomiting center.   • Fever and chills.   •
Hydronephrosis   • Postrenal azotemia: when kidney stone blocks
ureter