ocr: Resident and Staff Physician Patiant Education Chart Stag-Horn Kidney Stones Stag-Horn Calculus & - Smaller Stones: * Cause blood in the urine * Obstruct the ureter * Cause calyces and pelvis of the kidneys to become dialated Causes renal atrophy 60% to 70% - of stones contain calcium 15% are composed of magnesium and ammonium phosphate - 6 6% are composed of uric acid Reprinted with permission from Resident and: Staff Physician (c)1991-92, 1993 byl Romaine Pierson Publishers, Inc.
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