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目的探讨幼年型强直性脊柱炎(juvenile-onset ankylosing spondylitis,Jo AS)的MRI表现特点,以提高对该病的诊治水平。方法回顾性分析2010年10月—2014年9月经临床及实验室证实的25例Jo AS患者的MRI图像。结果 25例患者的67个病变部位包括骶髂关节(19个)、髋关节(21个)、髂嵴(6个)、坐骨结节(6个)、膝关节(9个)、踝关节(4个)及足部(2个)。MRI表现为骨髓水肿63个,关节积液36个,骨质破坏26个,附着点炎19个。结论骨髓水肿是Jo AS最常见的MRI表现,骨质破坏以中轴关节为主。MRI显示病变敏感但缺乏特异性,需注意鉴别诊断。
Objective To investigate MRI features of juvenile-onset ankylosing spondylitis (Jo AS) in order to improve the diagnosis and treatment of this disease. Methods The MRI images of 25 patients with Jo AS clinically and laboratory confirmed from October 2010 to September 2014 were retrospectively analyzed. Results Sixty-seven lesions of 25 patients included 19 sacroiliac joints, 21 hips, 6 iliac crests, 6 ischial tuberosity, 9 knees, 9 ankles, 4) and feet (2). MRI showed bone marrow edema 63, joint effusion 36, 26 bone destruction, attachment of inflammation 19. Conclusion Bone marrow edema is the most common MRI manifestations of Jo AS, and the central axis of the bone destruction is dominated. MRI showed the sensitivity of the disease but lack of specificity, the need to pay attention to differential diagnosis.