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Treglia G, Mirk P, Stefanelli A, Rufini V, Giordano A, Bonomo L. 18F-Fluorodeoxyglucose positron emission tomography in evaluating treatment response to imatinib or other drugs in gastrointestinal stromal tumors: a systematic review. Clin Imaging 2012; 36:167-75. [DOI: 10.1016/j.clinimag.2011.08.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 08/10/2011] [Accepted: 08/12/2011] [Indexed: 12/18/2022]
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Bachner M, Loriot Y, Gross-Goupil M, Zucali PA, Horwich A, Germa-Lluch JR, Kollmannsberger C, Stoiber F, Fléchon A, Oechsle K, Gillessen S, Oldenburg J, Cohn-Cedermark G, Daugaard G, Morelli F, Sella A, Harland S, Kerst M, Gampe J, Dittrich C, Fizazi K, De Santis M. 2-¹⁸fluoro-deoxy-D-glucose positron emission tomography (FDG-PET) for postchemotherapy seminoma residual lesions: a retrospective validation of the SEMPET trial. Ann Oncol 2012; 23:59-64. [PMID: 21460378 DOI: 10.1093/annonc/mdr052] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND 2-¹⁸fluoro-deoxy-D-glucose positron emission tomography (FDG-PET) has been recommended in international guidelines in the evaluation of postchemotherapy seminoma residuals. Our trial was designed to validate these recommendations in a larger group of patients. PATIENTS AND METHODS FDG-PET studies in patients with metastatic seminoma and residual masses after platinum-containing chemotherapy were correlated with either the histology of the resected lesion(s) or the clinical outcome. RESULTS One hundred and seventy seven FDG-PET results were contributed. Of 127 eligible PET studies, 69% were true negative, 11% true positive, 6% false negative, and 15% false positive. We compared PET scans carried out before and after a cut-off level of 6 weeks after the end of the last chemotherapy cycle. PET sensitivity, specificity, negative predictive value (NPV), and positive predictive value were 50%, 77%, 91%, and 25%, respectively, before the cut-off and 82%, 90%, 95%, and 69% after the cut-off. PET accuracy significantly improved from 73% before to 88% after the cut-off (P=0.032). CONCLUSION Our study confirms the high specificity, sensitivity, and NPV of FDG-PET for evaluating postchemotherapy seminoma residuals. When carried out at an adequate time point, FDG-PET remains a valuable tool for clinical decision-making in this clinical setting and spares patients unnecessary therapy.
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Affiliation(s)
- M Bachner
- ACR-ITR VIEnna/CEADDP, LBI-ACR VIEnna, and KFJ-Spital, Vienna, Austria
| | - Y Loriot
- Institut Gustave Roussy, Villejuif, France
| | | | - P A Zucali
- Istituto Clinico Humanitas IRCCS, Rozzano (Milan), Italian Germ Cell Cancer Group
| | - A Horwich
- The Royal Marsden Hospital, London and Surrey, UK
| | | | | | - F Stoiber
- Krankenhaus der Barmherzigen Schwestern, Linz, Austria
| | | | - K Oechsle
- Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - S Gillessen
- Kantonsspital St. Gallen, St. Gallen, Switzerland
| | | | - G Cohn-Cedermark
- Department of Oncology-Pathology, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - G Daugaard
- Department of Oncology, 5073 Rigshospitalet, Copenhagen, Denmark
| | - F Morelli
- Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - A Sella
- Assaf Harofeh Medical Center, Zerifin, Israel
| | - S Harland
- University College Hospital London, London, UK
| | - M Kerst
- The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - J Gampe
- Max Planck Institute for Demographic Research, Rostock, Germany
| | - C Dittrich
- ACR-ITR VIEnna/CEADDP, LBI-ACR VIEnna, and KFJ-Spital, Vienna, Austria
| | - K Fizazi
- Institut Gustave Roussy, Villejuif, France
| | - M De Santis
- ACR-ITR VIEnna/CEADDP, LBI-ACR VIEnna, and KFJ-Spital, Vienna, Austria.
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Abstract
In this Perspective the feasibility, scope and impact of integrating PET-based personalized medicine into the evidence-based clinical practice of oncology is discussed. The basic concepts of 'evidence-based medicine' and 'personalized medicine' at times seem contradictory; however, I will discuss, with specific clinical situations as examples, a synergistic and probably incremental link between the two and propose that the result of such integration will ultimately improve patient management. Tailoring therapeutic approaches and regimens by molecular imaging, with PET at its forefront, would enable disease management at the individual level and this modification would hopefully further strengthen the evidence-based approach in oncology.
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