Polyarticular juvenile idiopathic arthritis with rice bodies formation: A case report.

This article discusses a case of polyarticular juvenile idiopathic arthritis (JIA) with rice body formation in a 4-year-old female patient. The patient presented with painless swelling in the right ankle and left knee, along with limited movement and localized elevated skin temperature. Laboratory tests revealed abnormal levels of C-reactive protein, D-dimer, and erythrocyte sedimentation rate. Imaging showed extensive abnormal nodular signals in the joints, which were diagnosed as rice body synovitis. The patient was treated with anti-inflammatory medication and showed significant improvement in swelling. Rice body formation is a rare inflammatory disorder associated with systemic disease, and it is suggested to be caused by synovial microinfarcts or fibrin aggregation in the joint cavity. This is the first reported case of polyarticular JIA with rice bodies, and the prognosis is generally good with appropriate treatment. The article concludes that surgery combined with medication is the best treatment approach for this condition. [Extracted from the article]