This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joint disorders, Subject name: Anatomy
In a patient with gouty ahritis Synol fluid aspiration will show which of the following: 
Select and explain. 
A. Monosodium urate crystals, B. Calcium pyrophosphate crystals, C. Mononulcear leucocytosis, D. Polymorphonuclear leukocytosis
A: Monosodium urate crystals
Answer: A: Monosodium urate crystals 
Explanation: The definitive diagnosis of gout is made of examination of synol fluid or tophaceoius material with polarized light microscopy and identifying the characteristic monosodium urate crystals * Group of conditions which may be characterized by an elevation of serum uric acid (usually) * Recurrent attacks (flares) of an acute inflammatory ahritis with monosodium urate crystals demonstrated in synol fluid leukocytes * Bone and joint destruction in some cases Refer Harrison 20th/e p 2166/ maheswari 9th ed