Treatment of Osteosarcoma in Low-Grade Central or Parosteal Osteosarcoma
Low-grade central osteosarcoma and parosteal osteosarcoma represent distinct low-grade variants of osteosarcoma with characteristic behaviour that sets them apart from conventional high-grade disease and directly shapes how they are managed.
Clinical Scenario
Low-grade central osteosarcoma arises within the intramedullary canal, while parosteal osteosarcoma originates from the bone surface. Both are low-grade malignancies with a low metastatic potential, which distinguishes the appropriate management strategy for these subtypes.
Treatment Approach
The management of these low-grade variants centres on a surgical strategy — specifically a form of wide local resection — rather than the multimodal systemic treatment used for higher-grade osteosarcoma.
The complete protocol, including surgical criteria and guidance on specific situations, is available via the link below.
References
DOI: 10.1016/j.annonc.2021.08.1995
Low-grade central osteosarcoma and parosteal osteosarcoma are low-grade malignancies, arising intramedullary and from the bone surface, respectively.
Low-grade central and parosteal osteosarcoma are malignancies with a low metastatic potential that should be treated by surgery alone [IV, B].
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