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We read with great interest the article on ‘Novel ultrasonographic Halo Score for giant cell arteritis (GCA): assessment of diagnostic accuracy and association with ocular ischaemia’ by van der Geest et al.1 First, we would like to congratulate them for proposing the novel ultrasonographic score useful for both diagnosis and prognostication of the GCA. In the future, it may also serve as a disease activity marker in GCA. Large-vessel giant cell arteritis (LV-GCA) is a relatively less addressed entity. The prevalence of LV-GCA is not well defined and ranges from 10% to 83%, depending on the diagnostic modality.2 3
LV-GCA differs in terms of clinical presentation, vessel involvement and complications.3 In a study by Muratore et al, diagnostic performance of American …
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