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Increased FDG-PET/CT pericardial uptake identifies acute pericarditis patients at high risk for relapse.
Christel Gerardin, Arthur Mageau, Khadija Benali, Fanny Jouan, Gregory Ducrocq, Jean-Francois Alexandra, Damien van Gysel, Thomas Papo, Karim SacreInternational Journal of Cardiology 2018 November 15
OBJECTIVES: We aimed to evaluate the prognostic value of FDG pericardial uptake using FDG-PET/CT in patients admitted for acute pericarditis with pericardial effusion.
METHODS: In this monocentric retrospective cohort study, all patients admitted for idiopathic acute pericarditis with pericardial effusion from January 2009 to December 2016 who underwent a FDG-PET/CT at diagnosis were considered. Pericardial FDG uptake was measured by generating a volume of interest to calculate the maximal standardized uptake value. The primary outcome was the pericarditis relapse rate during follow-up.
RESULTS: FDG-PET/CT was performed 23 [7-99] days after diagnosis in 39 patients (52 [18-83] years, 43.6% of women) admitted for acute pericarditis with pericardial effusion. During a median follow-up period of 7.6 [2.4-77.2] months, 7 (17.9%) patients suffered pericarditis relapse that occurred 3.8 [1.6-14.6] months after FDG-PET CT. In the multivariable analysis, pericardial FDG uptake at diagnosis (OR: 16.6; 95% confidence interval [CI]: 1.25 to 220.8; p = 0.033) was independently associated with pericarditis relapse. Eventually, patients with pericardial FDG uptake at diagnosis had a higher recurrence rate during follow up (p = 0.047).
CONCLUSIONS: In acute pericarditis with pericardial effusion, increased FDG-PET/CT pericardial uptake is associated with a higher risk for relapse.
METHODS: In this monocentric retrospective cohort study, all patients admitted for idiopathic acute pericarditis with pericardial effusion from January 2009 to December 2016 who underwent a FDG-PET/CT at diagnosis were considered. Pericardial FDG uptake was measured by generating a volume of interest to calculate the maximal standardized uptake value. The primary outcome was the pericarditis relapse rate during follow-up.
RESULTS: FDG-PET/CT was performed 23 [7-99] days after diagnosis in 39 patients (52 [18-83] years, 43.6% of women) admitted for acute pericarditis with pericardial effusion. During a median follow-up period of 7.6 [2.4-77.2] months, 7 (17.9%) patients suffered pericarditis relapse that occurred 3.8 [1.6-14.6] months after FDG-PET CT. In the multivariable analysis, pericardial FDG uptake at diagnosis (OR: 16.6; 95% confidence interval [CI]: 1.25 to 220.8; p = 0.033) was independently associated with pericarditis relapse. Eventually, patients with pericardial FDG uptake at diagnosis had a higher recurrence rate during follow up (p = 0.047).
CONCLUSIONS: In acute pericarditis with pericardial effusion, increased FDG-PET/CT pericardial uptake is associated with a higher risk for relapse.
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