Role of [18F] FDG PET/CT for distinguishing benign and malignant pancreatic lesions (Abstract/Poster in atti di convegno)

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  • Role of [18F] FDG PET/CT for distinguishing benign and malignant pancreatic lesions (Abstract/Poster in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Alternative label
  • Federica Orsini, Duccio Volterrani, Assuero Giorgetti, Alice Lorenzoni, Federica Guidoccio, Ezio Ferdeghini, H William Strauss, Giuliano Mariani (2013)
    Role of [18F] FDG PET/CT for distinguishing benign and malignant pancreatic lesions
    in Society of Nuclear Medicine and Molecular Imaging's (SNMMI) 2013 Annual Meeting, Vancouver, British Columbia, 8-12 Giugno 2013
    (literal)
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  • Federica Orsini, Duccio Volterrani, Assuero Giorgetti, Alice Lorenzoni, Federica Guidoccio, Ezio Ferdeghini, H William Strauss, Giuliano Mariani (literal)
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  • 1500 (literal)
Pagina fine
  • 1500 (literal)
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  • http://jnumedmtg.snmjournals.org/cgi/content/meeting_abstract/54/2_MeetingAbstracts/1500?maxtoshow=&hits=10&RESULTFORMAT=&author1=orsini&andorexactfulltext=and&searchid=1&FIRSTINDEX=0&sortspec=relevance&resourcetype=HWCIT (literal)
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  • Society of Nuclear Medicine Annual Meeting Abstracts (literal)
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  • 54 (literal)
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  • 1 (literal)
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  • 2 (literal)
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  • Google Schola (literal)
  • Abstract (literal)
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  • Università di Pisa, Fondazione \"Gabriele Monasterio\", IFC-CNR (literal)
Titolo
  • Role of [18F] FDG PET/CT for distinguishing benign and malignant pancreatic lesions (literal)
Abstract
  • Objectives: To assess the ability of [18F]FDG PET/CT for distinguishing malignant from benign lesions of the pancreas and to evaluate the prognostic value of SUVmax in solid and cystic lesions. Methods: We reviewed 94 [18F]FDG PET/CT examinations performed in three different Institutions in patients with radiological suspicion of malignancy. We studied a total of 96 histologically confirmed lesions (39 malignant, 57 benign); 2 patients had 2 different pancreatic lesions. Follow-up was available for 85/94 patients. Results: The mean SUVmax of malignant lesions (5.6±3, range 1.3-17) was significantly higher than that of benign lesions (1.9±0.9 range 0.5-5). With a cut-off SUVmax <=2.4 for benign lesions, overall sensitivity and specificity of PET/CT for distinguishing malignant from benign pancreatic lesions were 93% and 87%, respectively. PPV was 91.5% and NPV was 89.5%. For cystic lesions (n=49), SUVmax <=2.1 as cut-off resulted in 80% sensitivity and 79.5% specificity, with 50% PPV and 94% NPV. There was a significant difference in SUVmax between malignant lesions (4.2±2.7, range 1.3-9) and benign lesions (1.9±1, range 0.5-5). 45/85 patients with long-term follow-up had pancreatic cancer. Analyzing SUVmax as prognostic factor for survival, Kaplan-Meier curves discriminated 3 subgroups with significantly different survivals: 1) 38 patients with SUVmax <=2.4 and longer survival (no deaths, median follow-up 42.5 months); 2) 22 patients with SUVmax 2.5-4.5 (4 deaths, median follow-up 21 months); and 3) 27 patients with SUVmax >4.6 (17 deaths, median survival 25 months, median follow-up 19 months). Conclusions: [18F]FDG PET/CT is useful to characterize suspicious pancreatic masses and allows differentiation of benign from malignant lesions. Moreover, SUVmax of pancreatic tumors correlates with the overall survival of patients. (literal)
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