title: EWING'S SARCOMA: EPIDEMIOLOGY AND PROGNOSIS FOR PATIENTS TREATED AT THE PEDIATRIC ONCOLOGY INSTITUTE, IOP-GRAACC-UNIFESP.
abstract: OBJECTIVE
  To outline the epidemiological profile and prognosis for Ewing's sarcoma in the Brazilian population.
  
  
  METHODS
  The medical records of 64 patients with intraosseous Ewing's sarcoma who were treated at the Pediatric Oncology Institute, IOP-GRAACC-Unifesp, between 1995 and 2010, were retrospectively evaluated.
  
  
  RESULTS
  The statistical analysis on the data obtained did not correlate factors such as sex, trauma, pathological fracture and time taken for case diagnosis with the treatment outcome. Factors such as initial metastasis, lung metastasis, tumor site, age, recurrence and type of surgery showed results corroborating what has been established in the literature.
  
  
  CONCLUSIONS
  The prognosis in cases of Ewing's sarcoma was mainly influenced by the presence of metastases at the time of diagnosis.
authors.affiliation: Physician specializing in the Oncological Orthopedics Sector, Discipline of Orthopedics, Department of Orthopedics and Traumatology, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Davi Gabriel
authors.initials: DG
authors.lastname: Bellan
authors.affiliation: Associate Full Professor and Head of the Oncological Orthopedics Sector, Discipline of Orthopedics, Department of Orthopedics and Traumatology, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Reynaldo Jesus-Garcia
authors.initials: RJ
authors.lastname: Filho
authors.affiliation: Third-year Resident in the Department of Orthopedics and Traumatology, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Jairo Greco
authors.initials: JG
authors.lastname: Garcia
authors.affiliation: MSc in Orthopedics and Traumatology; Attending Physician in the Oncological Orthopedics Sector, Discipline of Orthopedics, Department of Orthopedics and Traumatology, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Marcelo
authors.initials: M
authors.lastname: de Toledo Petrilli
authors.affiliation: MSc in Orthopedics and Traumatology; Attending Physician in the Oncological Orthopedics Sector, Discipline of Orthopedics, Department of Orthopedics and Traumatology, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Dan Carai
authors.initials: DC
authors.lastname: Maia Viola
authors.affiliation: P Associate Full Professor and Head of the Pediatric Oncology Sector, Department of Pediatrics, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Murillo Ferri
authors.initials: MF
authors.lastname: Schoedl
authors.affiliation: P Associate Full Professor and Head of the Pediatric Oncology Sector, Department of Pediatrics, EPM/Unifesp, São Paulo, SP, Brazil.
authors.forename: Antonio Sérgio
authors.initials: AS
authors.lastname: Petrilli
keywords: Bone Neoplasms; Prognosis; Sarcoma, Ewing