title: The importance of PET/CT in the evaluation of patients with Ewing tumors.
abstract: The effective evaluation for the treatment of patients with Ewing tumors depends on the accuracy in the determination of the primary tumor extent and the presence of metastatic disease. Currently, no universally accepted staging system is available to assess Ewing tumors. The present study aimed at discussing the use of PET/CT as a tool for staging, restaging and assessment of therapeutic response in patients with Ewing tumors. In spite of some limitations of PET/CT as compared with anatomical imaging methods, its relevance in the assessment of these patients is related to the capacity of the method to provide further physiological information, which often generates important clinical implications. Currently, the assessment of patients with Ewing tumor should comprise a study with PET/CT combined with other anatomical imaging modalities, such as radiography, computed tomography and magnetic resonance imaging.
authors.affiliation: MD, Radiologist at Medimagem, Physician Assistant at Musculoskeletal Unit, Hospital São José - Beneficência Portuguesa de São Paulo, Collaborator and Fellow at Musculoskeletal Unit, Department of Imaging Diagnosis - Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM-Unifesp), São Paulo, SP, Brazil.
authors.forename: Júlio Brandão
authors.initials: JB
authors.lastname: Guimarães
authors.affiliation: MD, Nuclear Medicine Specialist at Medimagem, Physician Assistant at PET/CT Unit, Hospital São José - Beneficência Portuguesa de São Paulo, São Paulo, SP, Brazil.
authors.forename: Letícia
authors.initials: L
authors.lastname: Rigo
authors.affiliation: MD, Radiologist at Medimagem, Physician Assistant at PET/CT Unit, Hospital São José - Beneficência Portuguesa de São Paulo, São Paulo, SP, Brazil.
authors.forename: Fabio
authors.initials: F
authors.lastname: Lewin
authors.affiliation: MD, Radiologist at Medimagem, Physician Assistant at Musculoskeletal Unit, Hospital São José - Beneficência Portuguesa de São Paulo, São Paulo, SP, Brazil.
authors.forename: André
authors.initials: A
authors.lastname: Emerick
keywords: Diagnosis; Evaluation; Ewing sarcoma; Imaging diagnosis