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Updated: May 24, 2026

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
Published on: February 8, 2019
Pericarditis revealing large vessel vasculitis.
Bruno Couturier1, Valerie Huyge, Muhammad S Soyfoo
1Department of Internal Medicine, Erasme Hospital, Université Libre de Bruxelles, 1070 Bruxelles, Belgium.
Giant cell arteritis, a form of large vessel vasculitis, typically presents with inflammation and headaches. This case highlights how Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) can reveal large vessel vasculitis in patients initially presenting with pericarditis.
Area of Science:
- Cardiology
- Rheumatology
- Nuclear Medicine
Background:
- Large vessel vasculitis (LVV), including Giant Cell Arteritis (GCA), is an inflammatory condition affecting major arteries.
- GCA diagnosis traditionally relies on temporal artery biopsy, which can be invasive and may yield false negatives.
Observation:
- A patient presented with symptoms mimicking pericarditis, a condition affecting the heart's outer lining.
- Initial diagnostic workup did not immediately suggest underlying vasculitis.
Findings:
- Fluorodeoxyglucose-Positron Emission Tomography (FDG-PET) imaging identified characteristic signs of large vessel vasculitis.
- This imaging modality proved crucial in uncovering the underlying vasculitic process.
Implications:
- FDG-PET may serve as a valuable non-invasive tool for diagnosing LVV, especially in atypical presentations.
- Early and accurate diagnosis of LVV can lead to timely intervention and improved patient outcomes.
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