title: Imaging features of crystal-induced arthropathy.
abstract: Crystal-induced arthropathies constitute a spectrum of inflammatory arthritides that is induced by cellular reaction to crystal deposition in and around joints. A variety of microcrystals may be deposited and can induce an inflammatory response. The three most common types of crystal-induced arthropathy are gout, calcium pyrophosphate dihydrate deposition disease, and calcium hydroxyapatite deposition disease. Each has a characteristic clinical presentation, crystal type that may be aspirated from affected tissues, and radiographic appearance. Each of these entities may occur as a primary abnormality or secondary to an underlying disorder. Sometimes these diseases may coexist in the same joint or individual. Imaging frequently plays a crucial role in the diagnosis of crystal-induced arthropathies and may help to monitor disease progression and treatment response.
authors.affiliation: Department of Radiology, Hospital of the University of Pennsylvania, 3400 Spruce Street/1 Silverstein, Philadelphia, PA 19104, USA.
authors.forename: Marc H
authors.initials: MH
authors.lastname: Choi
authors.forename: John D
authors.initials: JD
authors.lastname: MacKenzie
authors.forename: Murray K
authors.initials: MK
authors.lastname: Dalinka
mesh_terms: D001175:Arthrography; D002805:Chondrocalcinosis / Q000000981:diagnostic imaging* / Q000378:metabolism; D003460:Crystallization; D006073:Gout / Q000000981:diagnostic imaging* / Q000378:metabolism; D006801:Humans; D006882:Hydroxyapatites / Q000378:metabolism
chemical_list: D006882:Hydroxyapatites