<prompt> In a patient with gouty ahritis, synol fluid aspiration will show:Monosodium Urate crystalsCalcium Pyrophosphate crystalsMononuclear LeucocytosisPolymorphonuclear Leukocytosis  <response>: Demonstration of intracellular Monosodium Urate Crystals MSU in synol fluid from affected joint is diagnostic of gout. Ref: Harrisons Principles of Internal Medicine, 16th Edition, Page 2046; Current Rheumatology Diagnosis and Treatment, 2nd Edition, Page 467 