Synovial Fluid Eosinophilia: A Case Report in a Dog and Review of the Literature

Mary M. Christopher, Larry J. Wallace

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The first known report of synovial fluid eosinophilia in a dog is described here. The occurrence of eosinophils in joint fluid is rare. Sporadic cases have been recorded in humans and most can be related to immune‐mediated reactions, both parasitic and non‐parasitic. The dog in this case report had 20–52% eosinophils in multiple joints, as well as hemarthrosis and marked mononuclear cell reactivity. An intense peripheral eosinophilia was demonstrated one week later. The associated lameness resolved with non‐steroidal anti‐inflammatory therapy. Lack of remarkable history or other clinical symptoms led to a diagnosis of idiopathic, eosinophilic, polyarthritis, likely immune‐mediated.

Original languageEnglish (US)
Pages (from-to)25-31
Number of pages7
JournalVeterinary Clinical Pathology
Issue number2
StatePublished - Jun 1986
Externally publishedYes


  • canine.
  • eosinophils
  • synovial fluid


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