Schiettecatte E, Jaremko J L, Sudoł-Szopińska I, Znajdek M, Mandegaran R, Swami V, Jans L, Herregods N
Department of Radiology and Medical Imaging, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Gent, Belgium.
Department of Radiology, University of Alberta Hospital, 8440-112 Street, Edmonton, T6G 2B7, Alberta, Canada.
Eur J Radiol Open. 2020 Mar 4;7:100225. doi: 10.1016/j.ejro.2020.100225. eCollection 2020.
To determine the prevalence of incidental findings on sacroiliac (SI) joint MRI in children clinically suspected of Juvenile Spondyloarthritis (JSpA).
In this retrospective multi-center study of 540 children clinically suspected of JSpA who underwent MRI of SI joints from February 2012 to May 2018, the prevalence of sacroiliitis and other incidental findings was recorded.
In 106/540 (20 %) children MRI features of sacroiliitis were present. In 228 (42 %) patients MRI showed at least one incidental finding other than sacroiliitis. A total of 271 abnormal findings were reported. The most frequent incidental findings were at lumbosacral spine (158 patients, 29 %) and hip (43 patients, 8 %). The most common incidental finding was axial degenerative changes, seen in 94 patients (17 %). Other less frequent pathologies were: simple (bone) cyst in 15 (2,8 %) patients; enthesitis/tendinitis in 16 (3 %) patients; non-specific focal bone marrow edema (BME) away from SI joints in 10 (1,9 %) patients; ovarian cysts in 7 (1,3 %) patients; BME in the course of chronic recurrent multifocal osteomyelitis (CRMO) in 4 (0,7 %) patients; muscle pathology in 4 (0,7%) patients; benign tumors in 3 (0,6 %) patients; (old) fractures in 3 (0,6 %) patients; bony apophyseal avulsion in 2 (0,4 %) patients and malignant tumors in 2 (0,4 %) patients.
Incidental findings are common on MRI of the SI joints in children clinically suspected of JSpA, particularly at the lumbar spine and hips. They are seen even more frequently than sacroiliitis and can be relevant, as some will have clinical significance or require treatment.
确定临床疑似幼年型脊柱关节炎（JSpA）的儿童骶髂（SI）关节MRI偶然发现的患病率。
在这项对2012年2月至2018年5月期间540例临床疑似JSpA且接受了SI关节MRI检查的儿童进行的回顾性多中心研究中，记录了骶髂关节炎及其他偶然发现的患病率。
106/540例（20%）儿童存在骶髂关节炎的MRI特征。228例（42%）患者的MRI显示除骶髂关节炎外至少有一项偶然发现。共报告了271项异常发现。最常见的偶然发现位于腰骶椎（158例患者，29%）和髋关节（43例患者，8%）。最常见的偶然发现是轴向退变改变，见于94例患者（17%）。其他较不常见的病变包括：15例（2.8%）患者有单纯（骨）囊肿；16例（3%）患者有附着点炎/肌腱炎；10例（1.9%）患者在远离SI关节处有非特异性局灶性骨髓水肿（BME）；7例（1.3%）患者有卵巢囊肿；4例（0.7%）患者在慢性复发性多灶性骨髓炎（CRMO）病程中有BME；4例（0.7%）患者有肌肉病变；3例（0.6%）患者有良性肿瘤；3例（0.6%）患者有（陈旧性）骨折；2例（0.4%）患者有骨突撕脱；2例（0.4%）患者有恶性肿瘤。
临床疑似JSpA的儿童SI关节MRI偶然发现很常见，尤其是在腰椎和髋关节。它们比骶髂关节炎更常见，并且可能具有相关性，因为有些会具有临床意义或需要治疗。
