Abstract
Background/objectives
Giant cell arteritis (GCA) is a medical and ophthalmological emergency due to risk of stroke and sudden irreversible loss of vision. Fast and accurate diagnosis is important to prevent complications and long-term high dose glucocorticoids toxicity. Temporal artery biopsy is gold standard for diagnosing GCA. However, temporal artery ultrasound is a fast and non-invasive procedure which may provide a supplement or an alternative to biopsy. This study assesses the diagnostic performance of ultrasound and biopsy in the diagnosis of GCA.
Subjects/methods
Examination results of patients suspected of having GCA in the period from August 2018 to June 2019 were reviewed. Patients underwent clinical examination and blood tests. Within a few days of starting glucocorticoid treatment, temporal ultrasound and unilateral biopsy were performed. Experienced physicians established the final clinical diagnosis at 6-months follow-up.
Results
Seventy-eight patients underwent both ultrasound and biopsy. Thirty-five (45%) received the final clinical diagnosis of GCA. Compared with the final clinical diagnosis, biopsy had a sensitivity of 69% (51–83%) and a specificity of 100% (92–100%), and ultrasound a sensitivity of 63% (45–79%) and a specificity of 79% (64–94%). Area under the receiver operating characteristics curves were 0.84 and 0.71 for biopsy and ultrasound respectively (p = 0.048). False negative rate of ultrasound was 4 out of 78 (5%).
Conclusion
Sensitivity of ultrasound is almost on par with that of biopsy although the overall diagnostic accuracy of ultrasound was slightly lower. We find that ultrasound is a reliable tool for first line diagnosis of GCA.
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Funding
The study was funded by Synoptik Foundation and The Danish Rheumatism Association.
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Authors and Affiliations
Contributions
MSH: literature review, drafting of the paper, and data collection. LT: rheumatology expert in GCA and ultrasound; drafting and critical review of the paper. MRJ: expert in GCA and PET; drafting and critical review of the paper. JMB: expert in GCA and PET; drafting and critical review of the paper. UMD: rheumatology Expert in GCA and ultrasound; drafting and critical review of the paper. CF: data collection and review of the paper. SHe: histopathologist; critical review of the paper. ONK: critical review of the paper and statistics. EBK: critical review of the paper. YS: critical review of the paper and statistics. AKW: critical review of the paper. SHa: neuro-ophthalmologist expert in GCA; drafting and critical review of the paper. All authors have read and approved the paper.
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Hansen, M.S., Terslev, L., Jensen, M.R. et al. Comparison of temporal artery ultrasound versus biopsy in the diagnosis of giant cell arteritis. Eye 37, 344–349 (2023). https://doi.org/10.1038/s41433-022-01947-1
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DOI: https://doi.org/10.1038/s41433-022-01947-1