tophus

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tophus

 [to´fus] (L.)
1. a chalky deposit of sodium urate occurring in gout; tophi form most often around the joints in cartilage, bone, bursae, and subcutaneous tissue and in the external ear, producing a chronic, foreign-body inflammatory response.
2. dental calculus.
Tophus. Typical appearance of tophi, which are common in chronic gout, shown on an index finger. From Ignatavicius and Workman, 2000.
tophus syphili´ticus syphilitic node.

to·phus

, pl.

to·phi

(tō'fŭs, tō'fī),
1.
2. A salivary calculus, or tartar.
Synonym(s): gouty pearl
[L. a calcareous deposit from springs, tufa]

tophus

/to·phus/ (to´fus) pl. to´phi   [L.] a deposit of sodium urate in the tissues about the joints in gout, producing a chronic, foreign-body inflammatory response.

tophus

(tō′fəs)
n. pl. to·phi (-fī)
1. A deposit of urates in the skin and tissue around a joint or in the external ear, occurring in gout. Also called chalkstone.
2. A concretion of mineral salts and organic matter deposited on the surface of the teeth.

tophus

[tō′fəs] pl. tophi
Etymology: L, tufa, porous rock
a calculus containing sodium urate that develops in fibrous tissue around joints, typically in patients with gout. -tophaceous, adj.
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Tophus

tophus

The pathognomonic lesion of gout, which appears grossly when preserved in alcohol or other non-aqueous solution as a nodular mass of white chalky, pasty material composed of crystalline and amorphous urates–eg, monosodium urate monohydrates, surrounded by mononuclear cells, fibroblasts and a foreign body-type giant cell reaction with epithelioid histiocytes. See Gouty toe.

to·phus

, pl. tophi (tō'fŭs, -fī)
1. See: gouty tophus
2. A salivary calculus, or tartar.
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TOPHI: Left and right hands of a patient with multiple deforming gouty tophi
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TOPHI: Left and right hands of a patient with multiple deforming gouty tophi

tophus

(to'fus) plural.tophi [L., porous stone]
A deposit of sodium biurate in tissues near a joint, in the ear, or elsewhere in individuals with gout.
Synonym: gouty pearl See: illustration

Tophus (plural, tophi)

A chalky deposit of a uric acid compound found in gout. Tophi occur most frequently around joints and in the external ear.
Mentioned in: Gout

gouty tophus

localized deposition of crystalline monosodium urate monohydrate in peripheral tissues (e.g. first metatarsophalangeal joint); subungual tophus formation causes nail dystrophy, with onychauxis and/or onycholysis

to·phus

, pl. tophi (tō'fŭs, -fī)
A salivary calculus or tartar.

tophus

pl. tophi [L.]
1. a chalky deposit of sodium urate occurring in gout; tophi form most often around the joints in cartilage, bone, bursae and subcutaneous tissue.
2. dental calculus.