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Rice bodies - juvenile idiopathic arthritis

Case contributed by Henry Knipe
Diagnosis almost certain

Presentation

Persistent knee pain and swelling.

Patient Data

Age: 14 years
Gender: Male

Joint effusion with innumerable tiny intra-articular inclusions (rice bodies). No meniscoligamentous injury. Joint spaces are preserved. No joint erosion. No epiphyseal overgrowth. 

Case Discussion

This patient had a known history of juvenile idiopathic arthritis, which is important, as rice bodies themselves are a non-specific finding. 

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