Casteels I, De Bleecker C, Demaerel P, Van Wilderode W, Missotten L, Wilms G, Baert A L
Department of Ophthalmology, University Hospitals KU Leuven, Belgium.
J Belge Radiol. 1991;74(1):45-7.
A case of isolated unilateral extraocular muscle myositis following an acute upper respiratory tract infection is reported. Painful eye movements, restricted eye motility and exophthalmus but a normal visual acuity are the most important clinical findings. High resolution contrast enhanced CT and MRI are the imaging modalities of choice to differentiate from other orbital pathologies. The solitary enlarged muscle was clearly seen on both the contrast enhanced CT and the MR examination. Preseptal cellulitis was better seen on MRI, whereas high resolution CT was superior in the demonstration of periscleritis. Graves' ophthalmopathy and orbital cellulitis first have to be excluded. Corticosteroids are the therapy of choice in orbital myositis. A control, contrast enhanced CT after 4 weeks showed an almost normal muscle.
报告了1例急性上呼吸道感染后发生的孤立性单侧眼外肌肌炎病例。眼球运动疼痛、眼球运动受限和眼球突出但视力正常是最重要的临床发现。高分辨率增强CT和MRI是与其他眼眶病变相鉴别的首选影像学检查方法。在增强CT和磁共振检查中均清晰可见单独增大的肌肉。眶隔前蜂窝织炎在MRI上显示更佳，而高分辨率CT在显示巩膜炎方面更具优势。首先必须排除格雷夫斯眼病和眼眶蜂窝织炎。皮质类固醇是眼眶肌炎的首选治疗方法。4周后进行的对照增强CT显示肌肉几乎恢复正常。
