Performance du 18F-FDG-PET-Scan dans la recherche de cancer chez les patients avec MTEV non provoquée : résultats d'une méta-analyse.
Titre original :
Performance of 18F-fluorodesoxyglucose positron-emission tomography/computed tomography for cancer screening in patients with unprovoked venous thromboembolism: Results from an individual patient data meta-analysis.
Titre en français :
Performance du 18F-FDG-PET-Scan dans la recherche de cancer chez les patients avec MTEV non provoquée : résultats d'une méta-analyse.
Auteurs :
Philippe Robin, Nick van Esb, Pierre-YvesLe Rouxa, Matthew Rondinac, Ramón Lecumberrid, Mariëlle Beckerse, Grégoire Le Gal, Pierre-Yves Salauna
Revue :
Thrombosis Research Volume 194, October 2020, Pages 153-157
Introduction
Venous thromboembolism (VTE) may be the first manifestation of cancer. We aimed at evaluating the performance of 18F-Fluorodesoxyglucose Positron-Emission Tomography/Computed Tomography (FDG PET/CT) for occult cancer screening in patients with unprovoked VTE.
Methods
This was a pre-specified analysis of a systematic review and individual patient data meta-analysis including prospective studies assessing cancer screening in patients with unprovoked VTE. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of FDG PET/CT were calculated based on cancer diagnosis during a 1-year follow-up period.
Results
Four studies were identified as using FDG PET/CT as part of their extensive screening strategy. Out of the 332 patients who underwent FDG PET/CT, the scan was interpreted as positive in 67 (20.2%), as equivocal in 27 (8.1%), and as negative in 238 (71.7%). Seventeen (5.1%) patients were diagnosed with cancer at inclusion or during the 12-month follow up period. All cancers were diagnosed at initial screening. Pooled sensitivity, specificity, NPV, and PPV were 87.3% (95% CI, 55.3 to 97.4), 70.2% (95% CI, 48.2 to 85.6), 98.9% (95% CI, 94.3 to 99.7), and 17.9% (95% CI, 8.5 to 33.6), respectively.
Conclusion
FDG PET/CT appears to have satisfactory accuracy indices for cancer diagnosis in patients with unprovoked VTE. In particular, it exhibits a very high negative predictive value and could be used to rule out the presence of an underlying occult malignancy in this setting.