Sclerosing Epithelioid Fibrosarcoma of the Bone: A Case Report of High Resistance to Chemotherapy and a Survey of the Literature

Author:

Grunewald Thomas G. P.1,von Luettichau Irene1,Weirich Gregor2,Wawer Angela1,Behrends Uta1,Prodinger Peter M.3,Jundt Gernot4,Bielack Stefan S.5,Gradinger Reiner3,Burdach Stefan1

Affiliation:

1. Department of Pediatrics and Pediatric Oncology Center (POC), Klinikum rechts der Isar, Technische Universität München, Kölner Platz 1, 80804 Munich, Germany

2. Institute of Pathology, Technische Universität München, Ismaninger Straße 22, 81675 Munich, Germany

3. Department for Orthopedics and Trauma Surgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, 81675 Munich, Germany

4. Institute of Pathology, University of Basel, Schönbeinstraße 40, 4003 Basel, Switzerland

5. Klinik für Kinder- und Jugendmedizin, Pädiatrie 5 (Onkologie, Hämatologie, Immunologie), Klinikum Stuttgart, Olgahospital, Bismarckstraße 8, 70176 Stuttgart, Germany

Abstract

Sclerosing epithelioid fibrosarcoma (SEF) is a rare soft tissue sarcoma mostly occurring in extraosseous sites. SEF represents a clinically challenging entity especially because no standardized treatment regimens are available. Intraosseous localization is an additional challenge with respect to the therapeutical approach. We report on a 16-year-old patient with SEF of the right proximal tibia. The patient underwent standardized neoadjuvant chemotherapy analogous to the EURAMOS-1 protocol for the treatment of osteosarcoma followed by tumor resection and endoprosthetic reconstruction. Histopathological analysis of the resected tumor showed>90% vital tumor cells suggesting no response to chemotherapy. Therefore, therapy was reassigned to the CWS 2002 High-Risk protocol for the treatment of soft tissue sarcoma. To date (22 months after diagnosis), there is no evidence of relapse or metastasis. Our data suggest that SEF may be resistant to a chemotherapy regimen containing Cisplatin, Doxorubicin, and Methotrexate, which should be considered in planning treatment for patients with SEF.

Publisher

Hindawi Limited

Subject

Radiology Nuclear Medicine and imaging,Oncology

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