nephrolithiasis, irregular brown kidney stones (renal calculus or nephrolith), the stones are different in size

ache acid ammonium back bladder block blockage brown brownish calcareous calcium calculi calculus colic crystal cystine cystitis damage focus fragmentation gravel gravels human infection internal irregular kidney laser lithotripsy magnesium medical nephritic nephritis nephrolith nephrolithiasis operative oxalate pain painful phosphate pressure problem renal salts selective sick size stone stones struvite surgery tract treatment ureter ureteroscopy urethra uric urinal urinary