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has been cited by the following article:

• TITLE: Retroperitoneal Extraskeletal Osteosarcoma in a Pregnant Woman Incidentally Found on Cesarean Section

  AUTHORS: Shizue Fujihara, Teruyuki Yamasaki, Kontoku Shimokawa, Han-Seung Yoon

  KEYWORDS: Extraskeletal Osteosarcoma, Pregnant Woman, MDM2, CDK4

  JOURNAL NAME: Open Journal of Pathology, Vol.6 No.1, January 11, 2016

  ABSTRACT: Extraskeletal osteosarcoma (ESO) is a rare malignant mesenchymal neoplasm accounting for 1% - 2% of all soft tissue sarcomas that produce osteoid, bone, and/or chondroid material. Here we report the first case of a retroperitoneal ESO in a 35-year-old pregnant woman. A retroperitoneal ESO was incidentally found at cesarean section. Despite treatment, she rapidly died from wide spread dissemination. We focus on histological characteristics including immunohistochemical results and differential diagnosis of ESO.