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Synovial sarcoma after chemotherapy for osteosarcoma: a case report.

Ikuo Kudawara1, Nobuhito Araki, Akira Myoui

  • 1Department of Orthopaedic Surgery, Osaka National Hospital, Osaka, Japan. kudawara@onh.go.jp

Clinical Orthopaedics and Related Research
|March 27, 2004
PubMed
Summary

This case report details a rare instance of double sarcomas in a young man, initially diagnosed with osteosarcoma and later developing synovial sarcoma. The findings suggest a potential link between chemotherapy and the development of secondary tumors.

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Area of Science:

  • Oncology
  • Pathology
  • Genetics

Background:

  • Osteosarcoma is a primary bone cancer.
  • Chemotherapy is a common treatment for osteosarcoma.

Observation:

  • A 23-year-old male patient with osteosarcoma developed a secondary soft tissue tumor.
  • The secondary tumor was located in the knee and diagnosed as synovial sarcoma.
  • Diagnostic methods included MRI, histology, immunohistochemistry, and molecular analysis (SYT-SSX fusion gene).

Findings:

  • The patient underwent chemotherapy (doxorubicin, cisplatin, methotrexate, ifosfamide) and surgery for osteosarcoma.
  • Immunohistochemistry revealed specific markers for the synovial sarcoma.
  • Molecular analysis confirmed the SYT-SSX fusion gene, characteristic of synovial sarcoma.

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Implications:

  • This case highlights the rare occurrence of double sarcomas.
  • Accurate diagnosis of both primary and secondary sarcomas is crucial.
  • The study suggests a potential association between chemotherapy, particularly doxorubicin, and the development of secondary sarcomas.