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Updated: Aug 11, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
Diffuse pulmonary amyloidosis that mimics interstitial lung disease in a patient with familial Mediterranean fever
Hakan Erdem1, Ismail Simşek, Salih Pay
1Department of Medicine, Division of Rheumatology, Gülhane Military School of Medicine, Etlik/Ankara, 06018, Turkey. herdem67@gata.edu.tr
Abstract:
Familial Mediterranean fever (FMF) is an autosomal-recessive disorder characterized by recurrent attacks of fever, serositis, and arthritis. Amyloidosis, which mostly affects the kidneys, represents the most serious complication of the disease. The lungs, particularly after the onset of renal failure, may be asymptomatically involved in some of the patients with AA amyloidosis secondary to FMF. However, clinically detectable pulmonary amyloidosis is quite rare, and only 2 cases of pulmonary amyloidosis secondary to FMF have been reported so far. We describe a patient with pulmonary amyloidosis who had pulmonary hypertension and presented with clinical and radiologic features highly suggestive of interstitial lung disease. Amyloidosis was diagnosed only after lung biopsy. FMF was confirmed by molecular analysis.
Insights
Familial Mediterranean Fever (FMF) can cause AA amyloidosis. This case highlights rare pulmonary amyloidosis in an FMF patient presenting with lung disease symptoms, confirmed via biopsy and genetic testing.
Area of Science:
- Rheumatology
- Pulmonology
- Genetics
Background:
- Familial Mediterranean Fever (FMF) is an autosomal-recessive autoinflammatory disorder.
- AA amyloidosis, a complication of FMF, primarily affects kidneys but can involve lungs.
- Clinically significant pulmonary amyloidosis secondary to FMF is exceptionally rare.
Purpose of the Study:
- To report a rare case of pulmonary amyloidosis secondary to FMF.
- To highlight diagnostic challenges in patients with FMF and suspected interstitial lung disease.
- To emphasize the importance of biopsy for diagnosis.
Main Methods:
- Case report of a patient with FMF, pulmonary hypertension, and suspected interstitial lung disease.
- Diagnostic procedures included clinical evaluation, imaging, lung biopsy, and molecular analysis for FMF.
- Histopathological examination of lung biopsy confirmed amyloid deposition.
Main Results:
- The patient presented with symptoms and radiographic findings mimicking interstitial lung disease.
- Pulmonary amyloidosis was diagnosed definitively via lung biopsy.
- Molecular analysis confirmed the diagnosis of FMF.
Conclusions:
- Pulmonary amyloidosis is a rare but possible complication of FMF.
- Patients with FMF and unexplained lung disease may have pulmonary amyloidosis.
- Early diagnosis and management are crucial to prevent severe complications.
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