Which synovial fluid findings suggest tuberculous septic arthritis?

Updated: Sep 19, 2017
  • Author: John L Brusch, MD, FACP; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The synovial fluid of a joint infected with Mycobacterium tuberculosis shows marked leukocytosis. Although findings on acid-fast stains are usually negative, culture results are positive in 80% of cases. Culture results of synovial biopsies are positive in 94% of specimens.


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