Pediatric Dentistry · single question

A patient with gout and hepatitis presents. What would you expect to find in synovial joint fluid aspiration?

  1. Calcium pyrophosphate crystals
  2. Collagen fragments
  3. Creatinine deposits
  4. Uric acid crystals (monosodium urate)
Show answer and explanation

Correct answer: D. Uric acid crystals (monosodium urate)

  • A. Calcium pyrophosphate crystals cause PSEUDOGOUT (calcium pyrophosphate deposition disease/CPDD) — a different condition from gout.
  • B. Collagen fragments may be seen in OA but are not specific to gout.
  • C. Creatinine is a marker of renal function — not deposited in joints.
  • D. Correct. Gout is caused by hyperuricemia leading to deposition of monosodium urate (uric acid) crystals in joints. Synovial fluid analysis in acute gout shows negatively birefringent, needle-shaped urate crystals.

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