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== Overview ==


==Case #1==
==Case #1==
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===Histopathological Findings===
===Histopathological Findings===
[http://www.peir.net Images courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology]
[[Image:Gout case 1.jpg|left|thumb|400px|This is a gross photograph of an index finger from a patient with gout. The finger has been sectioned longitudinally to demonstrate the distal interphalangeal joint. Note the white chalky material within and adjacent to the joint (arrows). ]]
[[Image:Gout case 1.jpg|left|thumb|400px|This is a gross photograph of an index finger from a patient with gout. The finger has been sectioned longitudinally to demonstrate the distal interphalangeal joint. Note the white chalky material within and adjacent to the joint (arrows). ]]
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[[Image:Gout case 8.jpg|left|thumb|400px|This is a gross photograph of a tophus on the great toe of another patient with gout (arrow). The healed surgical incision and the size of this tophus indicate that this was a long-standing problem for this patient. ]]
[[Image:Gout case 8.jpg|left|thumb|400px|This is a gross photograph of a tophus on the great toe of another patient with gout (arrow). The healed surgical incision and the size of this tophus indicate that this was a long-standing problem for this patient. ]]
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==Sources==
Copyleft Images obtained courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology [http://www.peir.net]


== References ==
== References ==
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{{Reflist|2}}


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[[Category:Arthritis]]
[[Category:Rheumatology]]
[[Category:Disease]]
[[Category:Needs overview]]

Latest revision as of 21:55, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Case #1

Clinical Summary

This patient was diagnosed with gout approximately 20 years ago. At that time, he noted the gradual onset of pain in the left knee, followed by swelling, redness and heat, all of which persisted for approximately one month. Shortly thereafter, he had periodic episodes of hot, painful, swollen joints involving the left knee, left ankle, and both first metatarsophalangeal joints. At this time the patient was hospitalized for evaluation of these arthritides. Serum uric acid values on three separate occasions were 8.0, 9.3, and 8.7 mg/dl. In addition to the presence of the painful swollen joints, a gouty tophus was present on the left arm. The patient was readmitted to the hospital from time to time because of acute exacerbations of gouty arthritis. On the most recent hospital admission, a 3-cm tophus was found over the right elbow, as well as several smaller tophi over the right hand.

Autopsy Findings

The specimen consisted of an elliptically shaped, mottled, yellow-white irregular hard mass, measuring 8.0 x 5.0 x 2.0 cm. in diameter.

Histopathological Findings

This is a gross photograph of an index finger from a patient with gout. The finger has been sectioned longitudinally to demonstrate the distal interphalangeal joint. Note the white chalky material within and adjacent to the joint (arrows).


This is a gross photograph of the elbow of this patient. The subcutaneous nodules (arrows) on this arm are tophi caused by gout.


This is a low-power photomicrograph of the tophus removed from the elbow of this patient. Note the fibrous connective tissue (1) and the large foci containing the urate crystals (2) surrounded by the intense chronic inflammatory reaction.


This higher-power photomicrograph of the tophus demonstrates the collections of urate crystals (1) and the inflammatory cells at the edge of these foci (2).


This is a higher-power photomicrograph of the edge of the tophus. Most of the urate crystals dissolve away during processing. The inflammatory cells at the edge of these foci are clearly visible (arrow).


This is a high-power photomicrograph of the edge of the tophus. The character of the intense chronic inflammatory cell reaction is evident and note the presence of giant cells within this inflammatory cell reaction (arrows).


This is a photomicrograph of a tophus that was fixed in alcohol prior to histologic processing. The alcohol fixation preserves the water soluble urate crystals within the tissue. Note the urate crystals visible in this photomicrograph (arrows). Also note the chronic inflammatory reaction in the background.


This is a gross photograph of a tophus on the great toe of another patient with gout (arrow). The healed surgical incision and the size of this tophus indicate that this was a long-standing problem for this patient.


Sources

Copyleft Images obtained courtesy of Professor Peter Anderson DVM PhD and published with permission © PEIR, University of Alabama at Birmingham, Department of Pathology [2]

References

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