Extraskeletal subcutaneous osteosarcoma of the upper arm: A case report

Nakamura,Tomoki; Matsumine,Akihiko; Nishimura,Keisuke; Yokoyama,Hirokazu; Murata,Tetsuya; Uchida,Atsumasa; Sudo,Akihiro

doi:10.3892/ol.2010.204

Extraskeletal subcutaneous osteosarcoma of the upper arm: A case report

Authors:
- Tomoki Nakamura
- Akihiko Matsumine
- Keisuke Nishimura
- Hirokazu Yokoyama
- Tetsuya Murata
- Atsumasa Uchida
- Akihiro Sudo
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Affiliations: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Mie 514-8507, Japan, Department of Pathology, Mie University Graduate School of Medicine, Mie 514-8507, Japan, Department of Pathology and Laboratory Medicine, JA Suzuka General Hospital, Shizuoka, Japan
Published online on: November 10, 2010 https://doi.org/10.3892/ol.2010.204
Pages: 75-77

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Abstract

Extraskeletal osteosarcoma (ESOS) occurs in approximately 1% of soft tissue sarcomas and 2-4% of all osteosarcomas. In particular, subcutaneous osteosarcoma is extremely rare, occurring in less than 10% of ESOS cases. This report presents a case of a subcutaneous tumor in the upper arm of a 79-year-old male. Imaging and pathological findings led to the conclusion that the soft tissue tumor should be diagnosed as subcutaneous osteosarcoma. Additionally, this case report documented the clinicopathological findings of the extraskeletal subcutaneous osteosarcoma in this case and discussed its clinical features by reviewing cases previously described in the literature.

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