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However, radiologists tend to focus on synovitis in daily practice, and unusual peri- or extraarticular manifestations of rheumatoid arthritis are difficult to detect at the initial presentation. This pictorial essay describes a broad spectrum of ultrasonographic findings in tendons, bursae, ligaments, subcutaneous tissues, bones, and nerves to assist in the accurate diagnosis of rheumatoid arthritis.<\/jats:p>","DOI":"10.14366\/usg.20161","type":"journal-article","created":{"date-parts":[[2021,2,1]],"date-time":"2021-02-01T23:54:28Z","timestamp":1612223668000},"page":"602-616","update-policy":"https:\/\/doi.org\/10.14366\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Unusual, but important, peri- and extra-articular manifestations of rheumatoid arthritis: a pictorial essay"],"prefix":"10.14366","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1731-181X","authenticated-orcid":true,"given":"Ji 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