This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immune system, Subject name: Medicine
In a patient with gouty ahritis, synol fluid aspiration will show- 
Select and explain. 
A. Needle shaped crystals, B. Rhomboid shaped crystals, C. Mononuclear leucocytosis, D. Polymorphonuclear leukocytosis
A: Needle shaped crystals
Answer: A: Needle shaped crystals 
Explanation: During acute gouty attacks, needle-shaped MSU crystals typically are seen both intracellularly and extracellularly . With compensated polarized light, these crystals are brightly birefringent with negative elongation. Ref - Harrisons 20e p2632