What Does The Following Ecography Report Suggest?

I d like to have your diagnosis,if possible,on the following ecography. Kidneys are normal for size and echostructure.At middle third of right kidney there is a nodular solid formation likely starting from cortical and moderately hyperechogenic compared with the same cortical,having maximum diameter of 38 mm.It displays roundish morphology,regular and sharp edges and,at Doppler fluximeter evaluation,vascular signals at mainly peripheral distribution .(5/17/2017). I effected, the above ecography as for 5 months I m suffering for renal colic cured by muscle relaxants and/or Nsaids and water;the pain has nt been all the day.During the last month I feel pain, nearly all the day, at distal right ureter sometimes very strong that goes away by muscle relaxants and /or Nsaids.The ecographist didn t see any stone,but I feel the stone.At medium caliceal groups of left kidney there is an hyperechogenic spot(2 mm) There are not hydronephrosis in both kidneys.For about 35 years,every 3 or more years I emitted stones of about 4-5 mm or slightly more, but now I think that the stone is more great(if there aren t other diseases).I ve been hyperuricemic for about 35 years or more and I only treated myself by diet(!!!);six years ago uricemia has been 13.50 mg/dl and the last blood chemistry(5/31/2017) yelded normal values except for uricemia that was 8.10 mg/dl and, at urine test, 2-3 erythrocytes at microscopic field. What is your opinion about the aforementioned nodule(renal carcinoma,angiomyolipoma or other.Can a longstanding hyperuricemia give rise to the before immage,keeping in mind that always I ve had pain chiefly at feet and sometimes at classic big toe etc. and for 2-3 years pain has been nearly continue and during past 3 months every day,for which I ve to use Nsaids. Thank you very much and best regards.Nicola Meduri