Tophus

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Tophus is a deposition of subcutaneous deposition of uric acid seen in advanced gout.

Tophus achilles tendon
Tophus achilles tendon

Symptoms[edit | edit source]

Chronic tophi gout cause joint deformity and limitation of motion in affected joints may occur if several attacks of gout occur each year.

Gouty tophus
Gouty tophus

Locations[edit | edit source]

Uric acid deposits called tophi develop in cartilage tissue, tendons, and soft tissues. Deposits also can occur in the kidneys, leading to chronic renal failure.

Etiology[edit | edit source]

A tophus (Latin: "stone", plural tophi) is a deposit of monosodium urate crystals, in people with longstanding high levels of uric acid in the blood, a condition known as hyperuricemia.

Gouty tophi on the elbow
Gouty tophi on the elbow

Clinical pearl[edit | edit source]

Tophi are pathognomonic for the disease gout.

Pathophysiology[edit | edit source]

Without treatment, tophi may develop on average about ten years after the onset of gout, although their first appearance can range from three to forty-two years.

Treatment[edit | edit source]

  • When uric acid levels and gout symptoms are usually controlled with standard gout medicines such as colchicine or
  • Medications that decrease the production of uric acid (e.g., allopurinol, febuxostat)
  • Other medicines that increase uric acid elimination from the body through the kidneys such as probenecid) can also be used


Tophus Resources

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