1. Subcutaneous extraskeletal osteosarcoma of the forearm: a case report and review of the literature
   Christopher Healy et al, 2016, Skeletal Radiology CrossRef
2. A rare variant of extraskeletal osteosarcoma presenting as a clinically benign subcutaneous neoplasm
   Michael P. Ryan et al, 2019, Journal of Cutaneous Pathology CrossRef
3. Subcutaneous extraskeletal osteosarcoma of the foot: A case report
   K. Sneha et al, 2021, Sri Ramachandra Journal of Health Sciences CrossRef
4. Primary cutaneous extraskeletal osteosarcoma: a series of 16 cases
   Omar Habeeb et al, 2023, Pathology CrossRef
5. Extraskeletal osteosarcoma in right neck subcutaneous tissue: A case report of an extremely rare tumour
   Jin‑Shan Zhang et al, 2018, Molecular and Clinical Oncology CrossRef
6. Extraskeletal osteosarcoma misdiagnosed as metastatic breast cancer: A case report
   Emmanuel T. Limpin et al, 2024, Surgery Case Reports CrossRef
7. Extraskeletal osteosarcoma arising in the subcutaneous tissue of the lower leg: A case report and literature review
   Takashi Tamura et al, 2018, Molecular and Clinical Oncology CrossRef
8. Bone- and cartilage-forming tumors and tumors of joints
   Eduardo Calonje et al, 2020, Diagnostic Atlas of Cutaneous Mesenchymal Neoplasia CrossRef
9. Extraskeletal Osteosarcoma Recognized following Acute Traumatic Injury
   Karleigh R. Curfman et al, 2019, Case Reports in Oncology CrossRef
10. Extra-skeletal osteosarcoma: a review
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11. Extraskeletal Osteosarcoma
    Terence T. Sio et al, 2016, American Journal of Clinical Oncology CrossRef