Gallium-67 uptake in cutaneous sarcoidosis

Area of Science:

• Nuclear medicine
• Dermatology
• Rheumatology

Background:

• Sarcoidosis is a multisystem inflammatory disease.
• Gallium-67 scintigraphy is a common imaging technique for sarcoidosis, typically showing uptake in affected organs like the lungs and lymph nodes.

Observation:

• A patient with sarcoidosis presented with abnormally increased gallium-67 uptake specifically in cutaneous lesions.
• This finding occurred concurrently with active sarcoidosis in the lungs, periaortic lymph nodes, salivary glands, and lachrymal glands.

Findings:

• The case highlights that cutaneous sarcoidosis lesions can exhibit significant gallium-67 uptake.
• This suggests that skin manifestations of sarcoidosis may be more active or inflammatory than previously recognized.

Implications:

• Increased gallium-67 uptake in skin lesions could serve as a diagnostic or prognostic marker in sarcoidosis.
• This imaging finding may aid in assessing disease activity and guiding treatment decisions for patients with cutaneous sarcoidosis.