‘Halo sign’ | Final diagnosis | SPTPS value | SPTPS category |
Positive | Amyloidosis due to multiple myeloma* | 13 | HR |
Positive | Polymyalgia rheumatica* | 12 | IR |
Positive | Atherosclerosis* | 8 | LR |
Positive | Atherosclerosis* | 7 | LR |
Positive | Hydrocephalus | 8 | LR |
Positive | Undifferentiated connective tissue disease | 10 | IR |
Negative | GCA with exclusive aortic involvement | 11 | IR |
Negative | GCA with exclusive aortic involvement | 5 | LR |
Negative | GCA with exclusive aortic involvement | 15 | HR |
Negative | GCA with exclusive vertebral involvement | 19 | HR |
*Patient already included in previous publication:Fernández-Fernández et al. Rheumatology 2020;59:2443–7.12
CDUS, colour duplex ultrasound; GCA, giant cell arteritis; HR, high risk; IR, intermediate risk; LR, low risk; SPTPS, Southend Pre-Test Probability Score.