A case of Löfgren’s syndrome evaluated by imaging modalities: musculoskeletal ultrasound, MRI and PET-CT

Abstract

Löfgren’s syndrome is an acute form of sarcoidosis that is characterised by articular symptoms, erythema nodosum and bilateral hilar lymphadenopathy. This syndrome is rare in Japan. We report a 62-year-old Japanese woman with Löfgren’s syndrome and describe the articular manifestations as evaluated by multiple imaging modalities. Musculoskeletal ultrasound, magnetic resonance imaging and positron emission tomography-computed tomography findings indicated periarticular and subcutaneous inflammation. These imaging modalities facilitated the diagnosis of Löfgren’s syndrome and helped differentiate from other rheumatic diseases.

Keywords:

• Löfgren’s syndrome
• musculoskeletal ultrasound
• magnetic resonance imaging
• positron emission tomography-computed tomography

Acknowledgements

The authors wish to thank the patient and the family as well as the medical staff for their contribution to the case report.

Patient consent

Written informed consent was obtained from the patient for publication of this article.

Ethical approval

Not Applicable.

Conflict of interest

None.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.