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DOI: 10.1055/s-0040-1722582
Pelvic Ewing Sarcoma: The Great Mimicker[]
Article in several languages: português | English Financial Support There was no financial support from public, commercial or non-profit sources.
Abstract
Ewing sarcoma is the most common malignant bone tumor of the pelvis in children and young adults. Even with aggressive treatment, its survival rate is amongst the poorest. Classical presentation may not be the rule. It may simulate clinically, imagiologically and histopathologically other nonmalignant entities. Therefore, its suspicion should not be overlooked. We report two cases of pelvic Ewing sarcoma: the first mimicking eosinophilic granuloma, and the second mimicking osteomyelitis. In the latter, we also report an atypical finding of its natural history: an initial response to antibiotic and anti-inflammatory treatment. In both cases, we highlight the possibility of an inconclusive percutaneous bone biopsy and the importance of immunochemistry and cytogenetics for the definitive diagnosis.
Keywords
sarcoma, Ewing - pelvic neoplasms - eosinophilic granuloma - osteomyelitis - anti-onflammatory agents, non-steroidalWork developed at Orthopaedics and Traumatology Department, Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal.
Publication History
Received: 18 July 2020
Accepted: 17 September 2020
Article published online:
31 March 2021
© 2023. Sociedade Brasileira de Ortopedia e Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)
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