Henry Ford Hospital Medical Journal


Gout and pseudogout, two metabolically different diseases, occur rarely in the same individual. A patient is reported who featured calcium pyrophosphate dihydrate and monosodium urate cryslals simultaneously in the synovial fiuid exudate which was removed during an acute arthritic attack of the left knee. The patient represents the seventh such case reported in the literature. The pathogenetic differences of gout and pseudogout are reviewed as they relate to the role of the crystal.