Right knee swelling and pain.
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Mild degenerative bone changes are seen.
Parosteal linear soft tissue calcification is seen overlying the medial femoral condyle.
50-year-old female-presenting through A&E with right knee swelling and pain. Did not recall history of trauma. X-ray of the knee demonstrates curvilinear calcification adjacent to the medial femoral condyle paralleling the femoral cortex, consistent with a Pellegrini-Stieda lesion.