Three cases of canine cystine urolithiasis were reported at the Veterinary Hospital of Londrina State University in the period from 2007 to 2009. The diagnosis of urolithiasis was based on clinical history, physical examination, laboratory tests and radiographs, and the confirmation of the urolith type was performed at the Minnesota Urolith Center - USA, trough quantitative analysis, showing pure cystine uroliths. The therapy administered in both cases included surgical removal of the uroliths and prevention of recurrence by increasing the solubility of cystine in the urine with a commercial diet, increased fluid intake and alkalinization of the urine.
dog; urolith; cystinuria
