Monosodium urate crystals dissolve and are eliminated from joints and soft tissues as serum uric acid levels drop below its saturating point (400 μmol/l). Time to crystal clearance relates to ...

A needle aspiration of a subcutaneous tophus located on the palmar aspect of the left forefinger allowed demonstration of needle-shaped, negatively birefringent monosodium urate (MSU) crystals by ...