Synovial fluid eosinophilia following arthrography

A patient recovering from an acute gouty attack developed inflammation and eosinophilia of the synovial fluid following arthrography of the gouty joint. There was no evidence of systemic allergy to the contrast agent used. It is postulated that non-immune mechanisms were involved in the accumulation of eosinophils. An additional one of six synovial fluids obtained after arthrography contained 24% eosinophils. A review of the literature emphasizes the infrequency with which eosinophils are observed in synovial fluid.