kidney stones medical concept organ crystaline mineral formations cross section kidney for medical education flat illus

abstract anatomical anatomy artery awareness biology bladder body care cartoon clogged concept conceptual cross crystalline day design diagnosis diagram dialysis disease education failure flat formation health human ill illness illustration infection kidney magnesium medical medicine mineral nephrolithiasis organ pain painful patient phosphate problem renal science section stone struvite surgical system tract ureter ureterolithiasis urethra urinary urine