Distinction between diagnostic and classification criteria: a comment on ‘Biopsy negative giant cell arteritis – Revised diagnostic criteria: Giant cell arteritis diagnostic criteria’

We read with interest the case reported by Dr. Paquale Finelli1 which highlighted the importance of evaluating patients with non-invasive arterial imaging to identify radiographic features of large-vessel vasculitis (LVV). We agree with the author that evaluating for extracranial LVV is advised among patients presenting with stroke, elevated inflammatory markers, systemic inflammatory symptoms, and absence of traditional vascular risk factors; particularly if a thromboembolic source is not identified.