title: [Benign schwannoma with high uptake of 18 fluorodeoxglucose (PET-Scan)].
abstract: BACKGROUND
  In patients with a previous history of malignancy, the occurrence of a mediastinal mass with significant uptake of 18 Fluorodeoxyglucose on a PET-scan may lead to biopsy or resection.
  
  
  METHODS
  We report the case of a posterior mediastinal mass, with significant uptake of 18 Fluorodeoxyglucose on PET- scan, in a patient with a previous history of testicular seminoma. The lesion was actually a benign schwannoma.
  
  
  CONCLUSIONS
  In the case of a mediastinal mass with conventional imaging being in favour of a neurogenic tumour a PET scan cannot confirm benignity or malignancy.
authors.affiliation: Département Thoracique, Institut Mutualiste Montsouris, Paris, France.
authors.forename: M
authors.initials: M
authors.lastname: Sadok Boudaya
authors.forename: C
authors.initials: C
authors.lastname: Dechaud
authors.forename: D
authors.initials: D
authors.lastname: Gossot
authors.forename: P
authors.initials: P
authors.lastname: Validire
authors.forename: P
authors.initials: P
authors.lastname: Magdeleinat
authors.forename: J-L
authors.initials: JL
authors.lastname: Moretti
mesh_terms: D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008482:Mediastinum / Q000473:pathology; D008875:Middle Aged; D009442:Neurilemmoma / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D049268:Positron-Emission Tomography / Q000379:methods; D019275:Radiopharmaceuticals; D013906:Thoracoscopy; D016896:Treatment Outcome
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18