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C-2025 - Cross-sectional imaging in sacroiliitis associated with axial spondyloarthropathy
A. Amado Costa1, A. Peixoto2, A. Duarte3, J. Fonseca Santos2; 1Lisboa/PT 2Lisbon/PT 3Costa Caparica/PT
Type: Educational Exhibit
Area of Interest: Musculoskeletal joint
Imaging Techniques: MR, CT
Procedure: Education
Special Focus: Inflammation

Learning objectives:
To discuss the role of imaging in the evaluation of sacroiliitis. To review and illustrate the typical computed tomography and magnetic resonance imaging findings of sacroiliitis associated with axial spondyloarthropathy. To present and illustrate common differential diagnosis of sacroiliitis associ[...]
Background:
Sacroiliitis is an inflammation of one or both sacroiliac joints which often causes inflammatory back pain of varying intensity, though some patients may be asymptomatic. Sacroiliitis is a common finding in spondyloarthropathies, being frequently the first manifestation of axial spondyloarthropathie[...]
Findings and procedure details:
Role of imaging in the evaluation of sacroiliitis Some important clinical indications for imaging of sacroiliac joints are: to clarify the diagnosis in a patient with inflammatory back pain; to make a diagnosis of ankylosing spondylitis; to determine the amount of inflammation; to determine the am[...]
Conclusion:
CT and MRI have an important role in the evaluation of the sacroiliac joints. The radiologist should be familiarized with the CT and MRI characteristics of spondyloarthropathy-related sacroiliitis in order to cor­rectly interpret the imaging findings and avoid misdiagnosis.
Personal information:
A. L. Amado Costa Radiology resident Serviço de Imagiologia Geral - Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisboa, Portugal. E-mail address: costa.analuisa@yahoo.com
References:
Demir M, Mavi A, Gümüsburun E et al. Anatomical variations with joint space measurements on CT. Kobe J Med Sci. 2007;53(5):209-217. Navallas M, Ares J, Beltrán B et al. Sacroiliitis associated with axial spondyloarthropathy: new concepts and latest trends. Radiographics. 2013;33(4):933-956. Braun J,[...]

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