Tophi (plural of tophus) appear as lumps on affected joints due to deposits of monosodium urate (MSU) crystals in patients with longstanding high levels of serum uric acid (hyperuricaemia).

Tophi are a pathognomonic feature of gout.

History and etymology

Tophus means "stone" in Latin.

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Article information

rID: 28292
Synonyms or Alternate Spellings:
  • Tophi

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Cases and figures

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    Case 1: tophaceous gout
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