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Published on: February 8, 2019
Giant cell arteritis: is the clinical spectrum of the disease changing?
Miguel Á González-Gay1,2,3, Miguel Ortego-Jurado4, Liliana Ercole5
1Division of Rheumatology and Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Hospital Universitario Marqués de Valdecilla, Instituto de Investigación Marqués de Valdecilla, 39011, Santander, Spain. miguelaggay@hotmail.com.
Insights
Giant cell arteritis (GCA) is an inflammatory vasculitis affecting older adults. Recognizing its diverse presentations and utilizing advanced imaging aids in early diagnosis to prevent severe complications.
Area of Science:
- Rheumatology
- Internal Medicine
- Vascular Medicine
Background:
- Giant cell arteritis (GCA) is a large and medium-sized artery vasculitis predominantly affecting individuals over 50.
- Clinical presentation can vary, including typical cranial symptoms or nonspecific signs with large-vessel involvement.
- Early diagnosis and treatment are crucial to prevent irreversible damage.
Purpose of the Study:
- To highlight the heterogeneity of Giant Cell Arteritis presentations.
- To emphasize the importance of recognizing GCA beyond typical cranial symptoms.
- To discuss the role of diagnostic tools in identifying GCA, especially with extracranial involvement.
Main Methods:
- Review of current knowledge on GCA presentation and diagnosis.
- Discussion of diagnostic modalities including temporal artery biopsy, ultrasonography, FDG-PET/TAC, MRI, and CT.
- Emphasis on clinical awareness and judicious test selection.
Main Results:
- GCA presents more heterogeneously than previously recognized.
- Overlap with polymyalgia rheumatica can lead to underdiagnosis.
- Advanced imaging techniques are valuable for detecting extracranial large-vessel GCA.
Conclusions:
- Increased awareness of diverse clinical manifestations is essential for timely GCA detection.
- Judicious use of diagnostic tests, including newer imaging, can improve diagnostic accuracy.
- Prompt diagnosis and management of GCA are critical to avoid severe complications.
Background:
Giant cell arteritis is a vasculitis of large and middle-sized arteries that affects patients aged over 50 years. It can show a typical clinical picture consisting of cranial manifestations but sometimes nonspecific symptoms and large-vessel involvement prevail. Prompt diagnosis and treatment is essential to avoid irreversible damage.
Discussion:
There has been an increasing knowledge on the occurrence of the disease without the typical cranial symptoms and its close relationship and overlap with polymyalgia rheumatica, and this may contribute to reduce the number of underdiagnosed patients. Although temporal artery biopsy is still the gold-standard and temporal artery ultrasonography is being widely used, newer imaging techniques (FDG-PET/TAC, MRI, CT) can be of valuable help to identify giant cell arteritis, in particular in those cases with a predominance of extracranial large-vessel manifestations.
Conclusions:
Giant cell arteritis is a more heterogeneous condition than previously thought. Awareness of all the potential clinical manifestations and judicious use of diagnostic tests may be an aid to avoid delayed detection and consequently ominous complications.
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