16 year old active male lacrosse player with multiple mildly expansile medullary and cortically-based lesions in calvarium and distal femora as well as one in the right 2nd metatarsal shaft.
Lesions are not painful. Has had these for many years. Initially noted on calvarium when worked up for headaches, then got skeletal survey, which showed others. Then got noncon MRI bilateral femora.
