Reference no: EM133483453

Question

A 4-year-old child presents to the primary care clinic with a history of several weeks of limping. The parents do not recall any specific injury or recent infections. They have noted swelling of the left knee, but it did not seem particularly painful. There is stiffness in the early morning hours that improves as the day progresses. There have not been any fevers, rashes, or other symptoms. What is the likely diagnosis? Outline the most likely labs and imaging studies. List differentials to consider.