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Role of Ultrasound and Other Advanced Imaging in the Diagnosis and Management of Gout.
MedLine Citation:
PMID:  21210257     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Imaging of gout with conventional radiography has been described since shortly after roentgenography was invented. Ultrasound (US) detects more erosions than conventional radiography in rheumatoid arthritis, and the same seems to be true for gout. MRI is being used to assess articular and periarticular masses, including gouty tophi. However, MRI findings in gout can lack specificity. Monosodium urate (MSU) tophi are very echogenic when US is used. Typical US features of gout include a double-contour sign or "urate icing." The double-contour consists of the hyperechoic bony contour and a parallel hyperechoic line of MSU crystals that deposit on the hypoechoic or anechoic hyaline cartilage. Tophi can have a "wet clumps of sugar" appearance, often surrounded by an anechoic halo. Tophi are closely related to the formation of erosions. If serum urate levels are lowered consistently below 6.0 mg/dL, the disappearance of MSU crystals can be observed sonographically.
Authors:
Ralf G Thiele
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-1-6
Journal Detail:
Title:  Current rheumatology reports     Volume:  -     ISSN:  1534-6307     ISO Abbreviation:  -     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-1-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888970     Medline TA:  Curr Rheumatol Rep     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Medicine, Allergy/Immunology and Rheumatology Division, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Box 695, Rochester, NY, 14642, USA, ralf_thiele@urmc.rochester.edu.
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