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Epstein-Barr (EB) monoarthritis leading to ruptured Baker's cyst
The Journal of Infection
|November 20, 1998
Abstract:
We report a case of Epstein-Barr (EB) infection that presented as an acute monoarthritis of the knee. This formed a Baker's cyst which ruptured into the gastrocnemius. The peripheral and synovial white blood counts were dominated by neutrophils. After repeated aspirations, spontaneous resolution occurred.
Insights
Epstein-Barr virus (EBV) infection can manifest as acute knee arthritis, leading to Baker's cyst formation and rupture. Neutrophil-predominant inflammation resolved spontaneously after joint fluid aspiration.
Area of Science:
- Rheumatology
- Infectious Diseases
- Orthopedics
Background:
- Epstein-Barr virus (EBV) is a common human herpesvirus.
- EBV infections typically present with infectious mononucleosis.
- Uncommon presentations of EBV, such as joint involvement, warrant further investigation.
Observation:
- A case of acute monoarthritis of the knee is presented.
- The arthritis was associated with the formation of a Baker's cyst.
- The Baker's cyst subsequently ruptured into the gastrocnemius muscle.
Findings:
- Peripheral and synovial fluid white blood cell counts were predominantly neutrophilic.
- Diagnosis was confirmed as Epstein-Barr virus infection.
- The joint inflammation and Baker's cyst resolved spontaneously following repeated aspirations.
Implications:
- This case highlights EBV as a potential cause of acute monoarthritis, particularly in the knee.
- Neutrophilic synovial fluid can be observed in EBV-related joint inflammation.
- Spontaneous resolution suggests a self-limiting course for this presentation of EBV infection.