MRI Findings of the Sacroiliac Joints in Patients with Low Back Pain: Alternative Diagnosis to Inflammatory Sacroiliitis

被引:0
|
作者
Eshed, Iris [1 ]
Lidar, Merav [2 ]
机构
[1] Sheba Med Ctr, Dept Diagnost Imaging, IL-5265601 Tel Hashomer, Israel
[2] Sheba Med Ctr, Rheumatol Unit, Tel Hashomer, Israel
来源
ISRAEL MEDICAL ASSOCIATION JOURNAL | 2017年 / 19卷 / 11期
关键词
sacroiliac joints; sacroiliitis; MRI; alternative diagnosis; spondyloarthritis; OSTEITIS CONDENSANS ILII; ANKYLOSING-SPONDYLITIS; SPONDYLOARTHRITIS; SPINE;
D O I
暂无
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background: Magnetic resonance imaging (MRI) is the most sensitive imaging modality for the detection of sacroiliitis. Diagnosing sacroiliitis on MRI is not always straightforward and can be challenging in some cases. Objectives: To evaluate the prevalence of alternative diagnoses suggested by MRI and characterize the MR appearance of the most common ones. Methods: Consecutive MRI examinations of the sacroiliac joints (SIJ) performed between 2005 and 2012 were retrospectively evaluated for the presence of structural and active sacroiliitis findings according to the Assessment of SpondyloArthritis International Society guidelines. Alternative diagnoses, including degenerative changes, diffuse idiopathic skeletal hyperostosis (DISH), osteitis condensans ilii (OCI), septic sacroiliitis/discitis, stress reaction and anatomic variants, were registered. Results: We evaluated 281 MRI examinations, 116 males, 165 females, average age 44 15 years. Sacroiliitis was found in 71 examinations (25%) and alternative diagnoses were suggested in 87 (31%) (OCI 8.9%, anatomic variants 5.3%, septic sacroiliitis/discitis 5.3%, degenerative findings 4.3%, DISH 1.5%, stress reaction 0.7%, tumor 0.3%). A normal examination was found in the remaining 123 examinations. Patients with alternative diagnoses were older than those with sacroiliitis (62 vs. 47 years of age, respectively, P > 0.05). Alternative diagnoses in the SIJ were significantly more common in females (66) than in males (21), P < 0.05. Conclusions: A substantial proportion of patients with suspected sacroiliitis had normal SIJ while the rest were more commonly diagnosed with pathologies other than inflammatory sacroiliitis. A referral by an experienced rheumatologist may improve the sensitivity and specificity of this important examination.
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页码:666 / 669
页数:4
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