2018-08-272018-08-272015BATISTÃO, Guilherme T.; TIEZZI, Giovana F. M.; SALGE, Ana Karina M.; ABATE, Débora T. R. S.; OLEGÁRIO, Janainna G. P.; SILVA JUNIOR, Edgar L. da; PEREIRA, Antônio P.; PADULLA, Susimary A. T.; SILVA, Renata C. Rossi e. Sarcoma de Ewing/Pnet primário pré-sacral: relato de caso. Medicina, Ribeirão Preto, v. 48, n. 5, p. 518-522, 2015.10.11606/issn.2176-7262.v48i5p518-522e- 2176-7262http://repositorio.bc.ufg.br/handle/ri/15750Ewing’s sarcoma is a type of bone tumor that has aggressive behavior, which mainly affects individuals below 30 years and predominantly in males. The family of tumors includes Ewing a spectrum of neuroectodermal of primitive cells tumors which are embryonic cells migrating from the neural crest. In this report we present a male patient, 19 years, admitted to the emergency room with back pain, weakness of the lower limbs, difficulty urinating and right femur fracture a year ago. Requested magnetic resonance imaging of the pelvis and lumbosacral spine showed a presacral mass lesion and extramedullary and intradural lesions. Patient has been subjected to the pathological examination that showed Ewing’s sarcoma / primitive neuroectodermal tumor. Surgery for spinal decompression and subsequent radiotherapy and chemotherapy have been conducted.porAcesso AbertoSarcoma de EwingDiagnóstico por imagemImmunohistochemistrySarcomaEwingDiagnostic imagingImuno-histoquímicaArtigo