Atlas of MRI findings of sacroiliitis in pediatric sacroiliac joints to accompany the updated preliminary OMERACT pediatric JAMRIS (Juvenile Idiopathic Arthritis MRI Score) scoring system: Part II: Structural damage lesions

N Herregods; W P Maksymowych; Lbo Jans; T M Otobo; I Sudoł-Szopińska; A B Meyers; Maj Van Rossum; E Kirkhus; J Panwar; S Appenzeller; P Weiss; Sml Tse; A S Doria; Rgw Lambert; J L Jaremko

doi:10.1016/j.semarthrit.2021.07.009

Atlas of MRI findings of sacroiliitis in pediatric sacroiliac joints to accompany the updated preliminary OMERACT pediatric JAMRIS (Juvenile Idiopathic Arthritis MRI Score) scoring system: Part II: Structural damage lesions

Semin Arthritis Rheum. 2021 Oct;51(5):1099-1107. doi: 10.1016/j.semarthrit.2021.07.009. Epub 2021 Jul 10.

Authors

N Herregods¹, W P Maksymowych², Lbo Jans³, T M Otobo⁴, I Sudoł-Szopińska⁵, A B Meyers⁶, Maj Van Rossum⁷, E Kirkhus⁸, J Panwar⁹, S Appenzeller¹⁰, P Weiss¹¹, Sml Tse¹², A S Doria¹³, Rgw Lambert¹⁴, J L Jaremko¹⁴

Affiliations

¹ Department of Radiology and Nuclear Medicine, Ghent University Hospital, Ghent, Belgium. Electronic address: [email protected].
² Department of Rheumatology, University of Alberta, Alberta, Canada.
³ Department of Radiology and Nuclear Medicine, Ghent University Hospital, Ghent, Belgium.
⁴ Institute of Medical Sciences, Faculty of Medicine, University of Toronto, and Department of Diagnostic Imaging, The Hospital for Sick Children and Department of Translational Medicine, SickKids Research Institute, Peter Gilgan Center for Research and Learning, University of Toronto, Toronto, Canada.
⁵ Department of Radiology, National Institute of Geriatrics, Rheumatology and Rehabilitation, Warsaw, Poland.
⁶ Department of Radiology, Cincinnati Children's Hospital, Cincinnati, OH, United States.
⁷ Amsterdam Rheumatology and Immunology Center, Reade, and Emma Children's Hospital Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands.
⁸ Department of Radiology, Oslo University Hospital, Oslo, Norway.
⁹ Department of Radiology, Christian Medical College, Vellore, India.
¹⁰ Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.
¹¹ University of Pennsylvania Perelman School of Medicine, Division of Rheumatology, Children's Hospital of Philadelphia and Department of Pediatrics, University of Pennsylvania, Philadelphia, United States.
¹² Division of Rheumatology, The Hospital for Sick Children, Toronto, Canada.
¹³ Department of Medical Imaging, University of Toronto, Toronto and Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, Toronto, Canada.
¹⁴ Canada Department of Radiology and Diagnostic Imaging, University of Alberta and WC Mackenzie Health Sciences Center, Edmonton, Alberta, Canada.

PMID: 34311987
DOI: 10.1016/j.semarthrit.2021.07.009

Abstract

Magnetic resonance imaging (MRI) is the imaging modality of choice for identifying sacroiliitis in juvenile idiopathic arthritis (JIA). Besides active lesions of sacroiliitis, of which bone marrow edema (BME) is the key feature, structural damage lesions can also be detected. Structural changes include erosion, sclerosis, fat lesion, backfill and ankylosis, and are more common at later stages. Systematic MRI assessment of inflammation and structural damage may aid in monitoring the course of the disease and evaluating treatment options. In this pictorial essay, we illustrate normal MRI findings and growth-related changes of the SIJ in the pediatric population, as well as the different MRI features of structural damage of sacroiliitis. This atlas can serve as a reference for assessing structural lesions of SIJ arthritis according to the updated preliminary JAMRIS (Juvenile Idiopathic Arthritis MRI Score) scoring system proposed by the MRI in JIA working group of Outcome Measures in Rheumatology and Clinical Trials (OMERACT). The atlas is intended to be read in conjunction with its companion Part 1, Active Lesions.

Keywords: Children; JAMRIS; Juvenile idiopathic arthritis; Magnetic resonance imaging; Sacroiliac joints; Sacroiliitis; structural damage.

MeSH terms

Arthritis, Juvenile* / complications
Arthritis, Juvenile* / diagnostic imaging
Child
Humans
Magnetic Resonance Imaging
Outcome Assessment, Health Care
Rheumatology*
Sacroiliac Joint / diagnostic imaging
Sacroiliitis* / diagnostic imaging