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Poncet's Disease (Reactive Arthritis Associated with Tuberculosis).
Masayoshi Higashiguchi1, Tomoshige Matsumoto1, Takashi Kitamura2
1Department of Internal Medicine, Osaka Anti-Tuberculosis Association Osaka Fukujuji Hospital, Japan.
Internal Medicine (Tokyo, Japan)
|March 28, 2022
Summary
Poncet's disease is a rare form of tuberculosis-associated arthritis. It presents as joint pain due to immune responses, not direct infection, and improves with steroid treatment.
Area of Science:
- Rheumatology
- Infectious Diseases
- Immunology
Background:
- Miliary tuberculosis can present with diverse extrapulmonary manifestations.
- Poncet's disease is a reactive arthritis associated with tuberculosis, distinct from tuberculous arthritis.
- Diagnosis relies on clinical presentation and exclusion of direct joint infection.
Observation:
- An 82-year-old male with miliary tuberculosis developed polyarthritis (fingers, wrists, ankles) six weeks post-treatment initiation.
- Synovial biopsy showed chronic inflammation without granulomas or acid-fast bacilli.
- Joint pain resolved rapidly with corticosteroid therapy.
Findings:
- The case illustrates Poncet's disease, a tuberculous dactylitis caused by immune-mediated mechanisms.
- Absence of granulomas or bacilli in synovial biopsy supports an immune-mediated etiology.
- Rapid response to steroids is characteristic of Poncet's disease.
Implications:
- Highlights the importance of considering immune-mediated joint manifestations in tuberculosis patients.
- Suggests that prompt diagnosis and management of Poncet's disease can alleviate joint symptoms.
- Underscores the need for a high index of suspicion for Poncet's disease in tuberculous arthritis presentations.
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