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Chlamydia pneumoniae arthritis in a patient with common variable immunodeficiency
Omür Ardeniz1, Okan Gülbahar, Nihal Mete
1Department of Internal Medicine, Ege University Medical Faculty, Izmir, Turkey. oardeniz@med.ege.edu.tr
Summary
Common variable immunodeficiency (CVID) patients can develop arthritis. This study identifies Chlamydia pneumoniae as a rare cause of arthritis in a CVID patient, detected via synovial fluid cell culture.
Area of Science:
- Immunology
- Infectious Diseases
- Rheumatology
Background:
- Arthritis is a serious complication in patients with common variable immunodeficiency (CVID).
- Identifying the causative agent of arthritis in CVID is crucial for effective treatment.
Observation:
- A CVID patient presented with arthritis following recurrent respiratory tract infections.
- Synovial fluid analysis revealed abundant lymphocytes, with routine cultures negative for common pathogens.
Findings:
- Chlamydia pneumoniae, a respiratory pathogen, was successfully cultured from the patient's synovial fluid.
- The same pathogen was identified in nasopharyngeal and sputum samples, confirming systemic infection.
Implications:
- Chlamydia pneumoniae should be considered in the differential diagnosis of arthritis in CVID patients, particularly with lymphocytic effusions.
- This finding expands the known spectrum of C. pneumoniae infections and highlights the need for specialized diagnostics in immunocompromised individuals.