History of metabolic myopathy. Bone lesion seen on MRI. Patient with complaint of the thigh muscle cramping/soreness. Evaluate for left femur lesion/calcifications. 2 views of the left femur show a lucent lesion in the mid femoral diaphysis with endosteal scalloping corresponding to the abnormality seen on recent MRI. There may be faint calcifications within the lesion but this is equivocal. We see no frank cortical penetration. The remainder of the femur is unremarkable.
Lucent lesion in the mid femoral diaphysis as described above. Its appearance on MRI is suggestive of an enchondroma although we cannot confidently see calcification within the lesion on these radiographs. CT may be considered as a more sensitive modality for detecting calcification.