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Echinococcal synovitis of the knee joint
Panagiotis G Vallianatos1, Anastasia C Tilentzoglou, Savvas V Seitaridis
1Sports Injuries Department, KAT Hospital, Athens, Greece. atilentzoglou@yahoo.com
Summary
Hydatid synovitis, an infection of the joint lining, is rare. This case highlights a unique instance of hydatid synovitis in the knee without bone lesions, emphasizing the need for broader diagnostic considerations.
Area of Science:
- Medicine
- Infectious Diseases
- Rheumatology
Background:
- Hydatid disease typically involves bone lesions (1-2% of cases).
- Hydatid synovitis usually arises from adjacent bone lesions or hematogenous spread.
- Diagnosis often relies on identifying associated bony involvement.
Observation:
- A 74-year-old male presented with isolated left knee swelling.
- Initial physical examination and laboratory tests were unremarkable.
- Standard knee radiography did not reveal significant findings.
Findings:
- Arthroscopic synovectomy was performed for the knee swelling.
- Biopsy confirmed echinococcus contamination, diagnosing hydatid synovitis.
- This case represents hydatid synovitis without any detectable bone lesions.
Implications:
- Presents an extremely rare case of primary hydatid synovitis.
- Challenges the typical understanding of hydatid disease presentation in joints.
- Suggests considering echinococcus infection in unexplained synovitis, even without bone involvement.