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01.12.2014 | Case report | Ausgabe 1/2014 Open Access

World Journal of Surgical Oncology 1/2014

Metastasis of osteosarcoma to the trapezius muscle: a case report

World Journal of Surgical Oncology > Ausgabe 1/2014
Yuichiro Sakamoto, Masahiro Yokouchi, Satoshi Nagano, Hirofumi Shimada, Shunsuke Nakamura, Takao Setoguchi, Ichiro Kawamura, Yasuhiro Ishidou, Akihide Tanimoto, Setsuro Komiya
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1477-7819-12-176) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

SY, SN, HS, and MY managed the case and drafted the manuscript. SN, TS, IK, and YI collected the findings and participated in the design of the study. AT performed pathological examination and figure preparation. SK was involved in the design and coordination of the study and helped to draft the manuscript. All authors have read and approved the final manuscript.


Metastasis of a primary osteosarcoma to the muscles is extremely rare. As there have been few reported cases, the necessity of surgical treatment for such metastatic lesions remains controversial. We present the case of a primary osteosarcoma with development of a solitary metastasis to the trapezius muscle during chemotherapy for pulmonary metastasis. The patient was a 51-year-old man diagnosed with osteosarcoma of the right tibia. After undergoing chemotherapy and femoral amputation, he developed pulmonary metastasis. Chemotherapy was reinitiated, however, after approximately 1 year a palpable tumor was identified in the patient’s right shoulder. This tumor grew and was associated with pain in the right shoulder. It was surgically removed 3 years after the re-initiation of chemotherapy. The pathological diagnosis was osteosarcoma with metastasis to the trapezius muscle. Although the patient died of respiratory failure due to pulmonary metastasis 14 months after resection of the metastatic lesion in the trapezius muscle, no new extrapulmonary metastasis was observed after the resection.
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