Navallas M, Rebollo Polo M, Riaza L, Muchart López J, Maristany T
Servicio de Radiología, Hospital Sant Joan de Déu, Esplugues de Llobregrat, Barcelona, España.
Radiologia. 2013 Sep;55(5):373-84. doi: 10.1016/j.rx.2012.11.004. Epub 2013 Jan 19.
The term juvenile idiopathic arthritis (JIA) encompasses a heterogeneous group of arthritides with no known cause that begin before the age of 16 years and persist for at least 6 weeks. In recent decades, imaging techniques have acquired a fundamental role in the diagnosis and follow-up of JIA, owing to the unification of the different criteria for classification, which has strengthened the research in this field, and to the development of disease-modifying antirheumatic drugs. In this article, we briefly explain what JIA is. Moreover, we describe the role and limitations of plain-film radiography, ultrasonography, and magnetic resonance imaging (MRI). Finally, we review the MRI protocol and findings, and we comment on the differential diagnosis.
青少年特发性关节炎（JIA）这一术语涵盖了一组病因不明的关节炎，这些关节炎在16岁之前发病并持续至少6周。近几十年来，由于不同分类标准的统一（这加强了该领域的研究）以及改善病情抗风湿药物的发展，成像技术在JIA的诊断和随访中发挥了重要作用。在本文中，我们简要解释什么是JIA。此外，我们描述了X线平片、超声和磁共振成像（MRI）的作用及局限性。最后，我们回顾MRI检查方案和结果，并对鉴别诊断进行评论。
