An 11-year-old boy for a month has been presenting with increasing pain in the right femur. In the painful area there is a nonmobile painful tumor with unclear margins. The child complains of general indisposition, weakness, increased body temperature up to 39°C. X-ray shows widened medullary cavity small foci of cancellous bone destruction, and onion-like lameliar exfoliation of the cortical layer. What is the most likely pathology resulting in such clinical presentation?