(OBQ04.226)
A 4-year-old female is brought by her parents in regard to a right sided limp that improves during the day and has been present for two months. She is found to have a right knee effusion and associated soft-tissue swelling with no redness or warmth. Lab work reveals negative Rheumatoid factor, a positive low titer ANA and a normal WBC. Radiographs are normal for her age. What additional work up does she need?
QID:
1331