Extraskeletal Ewing sarcoma: report of a rare and exuberant case simulating lipoma

• Autor(a) principal: Alfredo, Melissa de Almeida Corrêa [UNESP]
• Data de Publicação: 2023
• Outros Autores: Lacerda, Priscila Neri [UNESP], Abreu, Ana Flávia Teixeira [UNESP], Carneiro, Alexandre Morais [UNESP], Campos, Eloisa Bueno Pires [UNESP], Miot, Helio Amante [UNESP]
• Tipo de documento: Artigo
• Idioma: eng; por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.5935/SCD1984-8773.2023150183; http://hdl.handle.net/11449/248809
• topic: Ewing; Neuroectodermal tumors; Sarcoma

Extraskeletal Ewing sarcoma (EES) is a rare tumor that affects men between 10-20 years old and represents 25% of Ewing sarcomas. We report a case due to the previous diagnosis of a fast-growing lipoma to highlight the importance of histopathological diagnosis. A 14-year-old boy presented 10x10 cm tumor in the right shoulder for a year with ultrasonography suggesting lipoma. The lesion was excised and EES was confirmed by immunohistochemical analysis. EES diagnosis in young people is challenging compared to subcutaneous tumors, and histopathology is essential. The rapid progression of the tumor and high metastatic rates highlight the significance of early treatment.