Repetitive 18 F-FDG-PET/CT in patients with large-vessel giant-cell arteritis and controlled disease

Abstract : OBJECTIVE: 18F-FDG PET/CT can detect large-vessel involvement in giant-cell arteritis (GCA) with a good sensitivity. In patients with clinically and biologically controlled disease, we aimed to assess how vascular uptakes evolve on repetitive FDG-PET/CT. PATIENTS AND METHODS: All included patients had to satisfy the 4 following criteria: 1) diagnosis of GCA was retained according to the criteria of the American College of Rheumatology or based on the satisfaction of 2 criteria associated with the demonstration of large-vessel involvement on FDG-PET/CT; 2) all patients had a positive PET/CT that was performed at diagnosis before treatment or within the first 10 days of treatment; 3) another FDG-PET/CT was performed after at least 3 months of controlled disease without any relapse; 4) patients were followed-up at least for 12 months. RESULTS: Twenty-five patients (17 [68%] women, median age: 69 [65-78]) with large-vessel inflammation on a baseline FDG-PET/CT and with repetitive imaging during the period with controlled disease were included and followed-up for 62 [25-95] months. Four repeated procedures revealed total extinction of vascular uptakes at 11.5 [8-12] months after the first FDG-PET/CT. Eight PET/CT revealed decreased numbers of vascular uptakes, and 10 procedures revealed no changes. The 3 remaining procedures indicated worsening of the numbers of vascular uptakes in the absence of relapse. CONCLUSIONS: Our study revealed long-term persistent vascular uptake on repeated FDG-PET/CT in >80% of our GCA patients with large-vessel inflammation and clinical-biological controlled disease. Prospective studies are required to confirm these findings.
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https://www.hal.inserm.fr/inserm-02092641
Contributor : Myriam Bodescot <>
Submitted on : Monday, April 8, 2019 - 12:18:22 PM
Last modification on : Wednesday, December 4, 2019 - 9:52:03 AM

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Hubert de Boysson, Nicolas Aide, Eric Liozon, Marc Lambert, Jean-Jacques Parienti, et al.. Repetitive 18 F-FDG-PET/CT in patients with large-vessel giant-cell arteritis and controlled disease. European Journal of Internal Medicine, Elsevier, 2017, 46, pp.66-70. ⟨10.1016/j.ejim.2017.08.013⟩. ⟨inserm-02092641⟩

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