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Table 2 Abnormalities found in CDS of the temporal arteries in patients with clinically suspected GCA and control subjects

From: Colour duplex sonography of temporal arteries before decision for biopsy: a prospective study in 55 patients with suspected giant cell arteritis

Final diagnoses (n) Presence of halo (bilateral) Blood-flow abnormalities
GCA (22) 18 (9) 9
Polymyalgia rheumatica (12) 0 4
Neoplasms (8) 0 2
Infections (10) 2 (0) 1
Wegener's granulomatosis (1) 1 (0) 1
Behçet's disease (1) 0 0
Polyarteritis nodosa (1) 0 1
Controls (age-/gender-matched)   
Healthy (15) 0 5
Diabetes mellitus and/or stroke (15) 0 6
  1. CDS, colour duplex ultrasonography; GCA, giant cell arteritis.