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Juxtacortical Osteosarcoma

Last updated Sept. 10, 2017

Approved by: Krish Tangella MD, MBA, FCAP


The topic Juxtacortical Osteosarcoma you are seeking is a synonym, or alternative name, or is closely related to the medical condition Parosteal Osteosarcoma.

Quick Summary:

  • Osteosarcoma forms a class of highly-cancerous, high-mortality, bone tumor. After multiple myeloma, it is the second-most common primary tumor of the bones
  • Parosteal Osteosarcoma is a slow-growing, rare bone tumor arising from the cortical surface of the bone. Hence, these are malignant bone tumors
  • The tumor occurs over the metaphyseal region, especially the long bones, near the knees. The most common location is the posterior aspect of distal femur (thigh bone), in approximately 70% of the cases
  • Parosteal Osteosarcoma presents as a mass with signs and symptoms that include pain and decreased joint movement
  • The exact cause of the condition is unknown and presently, it is not possible to prevent Parosteal Osteosarcoma occurrence
  • A treatment of this bone tumor may involve surgery, chemotherapy, and radiation therapy. The prognosis of Parosteal Osteosarcoma depends on the stage of cancer; higher grade osteosarcomas indicate a poorer prognosis

Osteosarcomas are classified in several different ways. They may be classified based on their cause/origin, location, or even based on certain diagnostic findings.

Based on where they occur, Osteosarcoma is classified as Medullary Osteosarcoma (occurring in the bone cavity) and Surface Osteosarcoma (occurring on the bone surface).

  • Medullary Osteosarcomas are of several different types, and these include:
    • Conventional Osteosarcoma
    • Osteosarcoma of Jaw Bones
    • Post-Radiation Sarcoma
    • Osteosarcoma arising in Paget's Disease of Bone
    • Osteosarcoma in other Benign Conditions
    • Telangiectatic Osteosarcoma
    • Small Cell Osteosarcoma
    • Low-Grade Osteosarcoma
    • Multicentric Osteosarcoma
  • Surface Osteosarcomas are of several different types, and these include:
    • Parosteal Osteosarcoma
    • Periosteal Osteosarcoma
    • High-Grade Surface Osteosarcoma

Please find comprehensive information on Parosteal Osteosarcoma regarding definition, distribution, risk factors, causes, signs & symptoms, diagnosis, complications, treatment, prevention, prognosis, and additional useful information HERE.

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Reviewed and Approved by a member of the DoveMed Editorial Board
First uploaded: Sept. 10, 2017
Last updated: Sept. 10, 2017