Using a distinct LVV classification method, Laurent et al. used a review of simultaneous PET and MR positivity to define an inflammatory pattern (Laurent et al. 2019), and found that an inflammatory pattern was associated with active disease in both GCA (as defined by the presence of clinical signs and increased CRP level (> 10 mg/L)) and TA (as defined by a National Institute of Health stroke score > 2). Here, CRP is linked to temporal arteritis.