title: Is CT scan still necessary for staging in Hodgkin and non-Hodgkin lymphoma patients in the PET/CT era?
abstract: BACKGROUND
  The clinical impact of fused PET/CT data on staging and patient management of Hodgkin disease (HD) and non-Hodgkin lymphoma (NHL) was assessed.
  
  
  METHODS
  A total of 103 consecutive patients with newly diagnosed NHL (n = 68) and HD (n = 35) were assessed retrospectively. Three comparisons were carried out in an attempt to assess the added value of each modality.
  
  
  RESULTS
  For NHL patients, there were significant differences between staging by CT versus PET/CT (P = 0.0001). Disease was upstaged by PET/CT in 31% (mostly in stages I and II) and downstaged in only 1% of patients. In 25% of the patients, the treatment approach was changed according to CT versus PET/CT findings. For HD patients, disease was upstaged by PET/CT in 32% and downstaged by PET/CT in 15% (P = NS). As for NHL, upstaging by PET/CT versus CT was evident mostly for stages I and II. The treatment strategy was altered as determined by CT versus PET/CT in 45% of the patients.
  
  
  CONCLUSIONS
  The addition of PET/CT to CT changed the management decisions in approximately a quarter of NHL and a third of HD patients, mostly in early disease stages. Thus, PET/CT performed as the initial staging procedure may well obviate the need for additional diagnostic CT in the majority of patients.
authors.affiliation: Rabin Medical Center, Department of Hematology, Isreal. praanani@012.net.il
authors.forename: P
authors.initials: P
authors.lastname: Raanani
authors.forename: Y
authors.initials: Y
authors.lastname: Shasha
authors.forename: C
authors.initials: C
authors.lastname: Perry
authors.forename: U
authors.initials: U
authors.lastname: Metser
authors.forename: E
authors.initials: E
authors.lastname: Naparstek
authors.forename: S
authors.initials: S
authors.lastname: Apter
authors.forename: A
authors.initials: A
authors.lastname: Nagler
authors.forename: A
authors.initials: A
authors.lastname: Polliack
authors.forename: I
authors.initials: I
authors.lastname: Ben-Bassat
authors.forename: E
authors.initials: E
authors.lastname: Even-Sapir
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D019788:Fluorodeoxyglucose F18; D005500:Follow-Up Studies; D006689:Hodgkin Disease / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D049268:Positron-Emission Tomography / Q000379:methods*; D011379:Prognosis; D019275:Radiopharmaceuticals; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18