In a patient with gouty ahritis, synol fluid aspiration will show-
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
Needle shaped crystals
Rhomboid shaped crystals
Mononuclear leucocytosis
Polymorphonuclear leukocytosis
Immune system