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. 2022 Sep 27;10(10):2417. doi: 10.3390/biomedicines10102417

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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An 11-year-old old girl with juvenile idiopathic arthritis and cervical spine arthritis. Sagittal T1- (a), fat-saturated T2- (b), and postcontrast fat-saturated T1-weighted show prominent C1/2 joint arthritis with atlantodental joint fluid and synovial enhancement (arrows). Follow-up MRI with postcontrast fat-saturated T1-weighted sagittal MR image (c) 2 years later shows ankylosis of the atlanto-occipital joint, still with bone marrow edema consistent with ongoing active inflammation/osteitis (star) (d).

An 11-year-old old girl with juvenile idiopathic arthritis and cervical spine arthritis. Sagittal T1- (a), fat-saturated T2- (b), and postcontrast fat-saturated T1-weighted show prominent C1/2 joint arthritis with atlantodental joint fluid and synovial enhancement (arrows). Follow-up MRI with postcontrast fat-saturated T1-weighted sagittal MR image (c) 2 years later shows ankylosis of the atlanto-occipital joint, still with bone marrow edema consistent with ongoing active inflammation/osteitis (star) (d).