Lab case 361

60 year old man with painful knee effusion. Synovial fluids analysis showed the following:

  • WBC = 93000 (WBC differential shows neutrophils of 97%)
  • RBC = 8300
  • LDH = 310
  • Uric acids crystals were seen
  • No bacteria on microscopy

Questions:

  1.  What is your differential diagnosis
  2. How will you manage this patient