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Primary Extraskeletal Osteosarcoma in the Anterior Mediastinum: A Case Report and Review

  • Joo, Seohee;Song, Jae Won;Na, Kwon Joong;Park, Samina;Park, In Kyu;Kim, Young Tae;Kang, Chang Hyun
    • Journal of Chest Surgery
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    • v.52 no.4
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    • pp.243-246
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    • 2019
  • Extraskeletal osteosarcoma (ESOS) is a malignant soft tissue neoplasm producing osteoid, without any continuity with the bone or periosteum. Primary ESOS presenting in the mediastinum is an extremely rare, yet aggressive malignant tumor associated with a poor prognosis. We report a case of primary ESOS arising from the thymus in a 63-year-old male patient.