What is the role of PET/CT scans in the diagnosis of frozen shoulder syndrome (FSS) (adhesive capsulitis)?

Updated: Nov 12, 2020
  • Author: Jefferson R Roberts, MD; Chief Editor: S Ashfaq Hasan, MD  more...
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Answer

Duchstein et al suggest that 18-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) may have a role in diagnostically challenging cases, such as distinguishing the first phase of frozen shoulder from subacromial impingement. Their study in 20 patients, found that, in general, patients with frozen shoulder showed increased FDG uptake in the affected shoulder regions, whereas those with subacromial impingement showed no uptake. Combining visual assessment with semi-quantified analysis resulted in sensitivity of 100% and specificity of 93% for the distinction between the two disorders. [45]


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