Nephrolithiasis (Kidney Stone Disease) Types of kidney stones Calcium Oxalate Stones are most common Calcium Phosphate Uric Acid Struvite Cystine  ASSOCIATED MEDICAL CONDITIONS Several conditions predispose to stone formation, including Gastrointestinal malabsorption (e.g., crohn’s disease, gastric bypass surgery) Primary hyperparathyroidism Obesity Type 2 diabetes mellitus Distal renal tubular acidosis Hypertension Gout cardiovascular disease Cholelithiasis Reduced