High Grade Periosteal Osteosarcoma
- High Grade Surface Osteosarcoma
High grade periosteal osteosarcoma (also known as
high grade surface osteosarcoma) accounts for less than 1% of all osteosarcoma.
The only difference between conventional osteosarcoma and high-grade
per osteal osteosarcoma is the location of the latter on the surface
of the bone.
High grade periosteal osteosarcoma appears malignant
on plain x-ray. There is irregular cortical destruction as well as irregular
periosteal reaction. Bone marrow infiltration is visible on MRI.
High grade periosteal osteosarcoma appears identical
to conventional osteosarcoma microscopically. The tumors are treated
similarly and have the same prognosis.
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