Aboubacar S. Sangaré,Hope Jean Marie Vianney,Serge Ntungwanayo,J. Claude Sane, Extraskeletal Osteosarcoma in the Thigh Recognized Following Acute Traumatic Injury: A Case Report and Review of the Literature Clinical Oncology and Cancer Biology 2020 2733-2276 http://dx.doi.org/10.31487/j.COCB.2020.02.03 https://www.sciencerepository.org/extraskeletal-osteosarcoma-in-the-thigh-recognized-following-acute-traumatic-injury_COCB-2020-2-103 Abstract: Extraskeletal osteosarcoma is a rare mesenchymal malignancy arising in soft tissue that produces osteoid, neoplastic bone, or chondroid material without demonstrable attachments to bone or periosteum. We report an instructive case of extraskeletal osteosarcoma in a 42-year-old woman recognized following acute traumatic injury of her left thigh.Keywords: Extraskeletal osteosarcoma, soft tissue, traumatic injury, thigh