Gallium-67 scanning in Sjögren's syndrome: concise communication

Area of Science:

• Nuclear Medicine
• Rheumatology
• Pulmonology

Background:

• Sjögren's syndrome (SS) is an autoimmune disorder affecting exocrine glands.
• Diagnosis of SS, particularly its pulmonary and salivary gland involvement, can be challenging.

Purpose of the Study:

• To evaluate the utility of gallium-67 scintigraphy in detecting SS-related organ involvement.
• To assess gallium-67 uptake in salivary and pulmonary tissues in patients with primary and secondary SS.

Main Methods:

• Gallium-67 scans were performed on 12 patients diagnosed with primary or secondary SS.
• Salivary gland and pulmonary uptake of gallium-67 were analyzed.
• Clinical symptoms like dyspnea and chest radiograph findings were correlated.

Main Results:

• Four of five patients with primary SS showed gallium-67 uptake in salivary glands.
• Pulmonary gallium-67 uptake was observed in 10 out of 12 patients.
• Chest radiographs were largely normal despite significant patient-reported dyspnea.

Conclusions:

• Gallium-67 scintigraphy appears to be a sensitive, noninvasive tool for identifying lung and mediastinal involvement in SS.
• The scan may also aid in diagnosing salivary gland involvement in primary SS.
• This imaging technique could improve early detection and management of SS complications.