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However, further evaluation led to a diagnosis of a seropositive polyarticular juvenile idiopathic arthritis. The patient was subsequently treated with a biologic agent, resulting in marked improvement in mobility and overall quality of life.<\/jats:p>","DOI":"10.1136\/bcr-2025-269437","type":"journal-article","created":{"date-parts":[[2026,6,3]],"date-time":"2026-06-03T15:55:16Z","timestamp":1780502116000},"page":"e269437","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Juvenile idiopathic arthritis in prune belly syndrome"],"prefix":"10.1136","volume":"19","author":[{"given":"Indira","family":"Acharya","sequence":"first","affiliation":[{"name":"Department of Rheumatology, Internal medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana I","family":"Quintero-Del Rio","sequence":"additional","affiliation":[{"name":"Department of Pediatric Rheumatology, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, 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