Vasculitis & polymyalgia rheumatica
Development of a new simplified comprehensive scoring system for polymyalgia rheumatica: Integration of PET/CT findings and clinical features
Authors' conclusion
The new simplified comprehensive scoring system integrates PET/CT findings with the 2012 ACR/EULAR clinical classification criteria, simplifying the scoring components to improve diagnostic performance and clinical utility, thus making it more accessible and practical for rheumatologists in clinical settings.
Study context
- Population
- Patients aged ≥50 years with musculoskeletal pain who underwent PET/CT over the past decadestudy and validation cohorts
- Participants
- 125 vs 200
- Comparison
- New simplified comprehensive scoring system (PET/CT findings plus 2012 ACR/EULAR Polymyalgia rheumatica (PMR) classification criteria) for diagnosing PMR vs controls
- PMRn = 125
- Controln = 200reference
- Outcome
- Diagnostic performance of the new scoring system for PMR
Methodological detailsretrospective, derivation and validation cohorts
- Retrospective
- Derivation and validation cohorts
Performance
As reported in the abstract
Diagnostic performance of new scoring system (discovery cohort)
- Sensitivity for diagnosing PMR
- 92 %
- Specificity vs overall control group
- 86.5 %
- Sensitivity for distinguishing rheumatoid arthritis (RA)
- 90.4 %
- AUC, overall control group
- 0.892
- AUC, RA group
- 0.912
Further findings
Diagnostic performance of new criteria (validation cohort)
%
- Sensitivity
- 88
- Specificity
- 83.1
Original publication
Development of a new simplified comprehensive scoring system for polymyalgia rheumatica: Integration of PET/CT findings and clinical features. Semin Arthritis Rheum. Published 5 June 2025. doi:10.
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