A radiograph shows coarsened bony trabeculae of the left intertrochanteric region. There is also prominent sclerosis of the left sacroiliac joint. A bone biopsy of the proximal left femur was performed. Normal bone by polarized light microscopy is shown in Slide 4.4. This mass has been present for three years, and it has slowly expanded.
Periosteum overlies a cartilagenous cap.
She is a cheerleader and notices tenderness after performing acrobatics. She has no history of any trauma. There are numerous blood lakes that lack an endothelial lining. She had evidenced increasing kyphosis over the years. She also had senile dementia and was bedridden.