the renal stone is made up of constituents like calcium oxalate
, magnasium , uric acid , xanthin etc. if the stone is made up of uric acid or xanthin than tomatoes should not be used. plz. mail me your investigations report than i can tell you that weather you can eat it or not. stone smaller than 9mm in renal calyx or ureter
or bladder can easily be remover by hydrotherapy
. some ayurvedic medicines are also useful for treatment & further recurrence. for the prevention of stone recurrence start high fliud intake , daily exercise.