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Open Access Case report

Primary extraskeletal osteosarcoma of omentum majus

Shui-Xiang Tao1*, Guo-Qin Tian2, Meng-Hua Ge3 and Cheng-Long Fan4

Author Affiliations

1 Department of Surgery, Shaoxing County Center Hospital, Shaoxing, Zhejiang Province, PR China

2 Department of Gynecology, Shaoxing County Center Hospital, Shaoxing, Zhejiang Province, PR China

3 Department of General Surgery, Shaoxing County Center Hospital, Shaoxing, Zhejiang Province, PR China

4 Department of Pathology, Shaoxing County Center Hospital, Shaoxing, Zhejiang Province, PR China

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World Journal of Surgical Oncology 2011, 9:25  doi:10.1186/1477-7819-9-25

Published: 19 February 2011

Abstract

Extraskeletal osteosarcoma is a rare malignant soft tissue tumor. Here we present a case of a primary extraskeletal osteosarcoma arising from omentum majus in a 40-year-old Chinese woman. Ultrasonography of the pelvic cavity showed a large soft tissue mass with marked calcification. Complete surgical resection of the primary tumor was performed and the histopathological diagnosis was extraskeletal osteosarcoma of omentum majus. She was followed up without adjuvant radiotherapy and chemotherapy, and died from widespread intra-abdominal, lung and liver metastases 7 months postoperatively.