Tian Yan-Ming, Xiao Li-Hua, Gao Xiao-Wei
Chinese PLA Eye Center, No. 474 Hospital of Chinese PLA, Urumchi 830012, Xinjiang Uygur Autonomous Region, China.
Int J Ophthalmol. 2011;4(2):195-8. doi: 10.3980/j.issn.2222-3959.2011.02.18. Epub 2011 Apr 18.
To assess features of cavernous hemangioma (CH) in the orbit revealed by CT and MRI and summarize prediction of preoperative CT and MRI for the adhesion degree of CH in the orbit.
A total of 97 patients with pathologically confirmed CH in the orbit were examined with axial and coronal CT scan, and axial, coronal, sagittal, and enhanced fat suppression MRI scan. CT and MRI findings and intraoperative adhesion degrees were retrospectively analyzed.
There were 47 patients with slight adhesion, for whom CT and MRI showed round masses with well defined margins in the extraocular muscles; 14 patients with mild adhesion, for whom CT and MRI revealed irregular masses with unclear boundary between CH and the optic nerve in coronal images, and emissary veins in the posterior region of masses in contrast-enhanced images; 36 patients with severe adhesion, for whom CT and MRI exhibited an irregular or ovoid mass filling the orbital apex, or showed distorted and even spiky margins in the posterior region of masses in contrast enhanced images at the presence of a transparent triangle between the mass and the orbital apex.
Preoperative CT and MRI aid in accurate diagnosis, selection of the surgical approach, and assessment of the adhesion degree and surgical risks for CH.
评估眼眶海绵状血管瘤（CH）的CT及MRI表现，总结术前CT及MRI对眼眶CH粘连程度的预测情况。
对97例经病理证实的眼眶CH患者行CT轴位及冠状位扫描，以及MRI轴位、冠状位、矢状位及增强脂肪抑制扫描。对CT及MRI表现和术中粘连程度进行回顾性分析。
粘连轻微者47例，CT及MRI表现为眼外肌内边界清晰的圆形肿块；粘连轻度者14例，CT及MRI表现为冠状位图像上CH与视神经边界不清的不规则肿块，增强图像上肿块后方可见导静脉；粘连严重者36例，CT及MRI表现为填充眶尖的不规则或椭圆形肿块，或增强图像上肿块与眶尖之间存在透明三角时肿块后方边缘扭曲甚至呈尖刺状。
术前CT及MRI有助于眼眶CH的准确诊断、手术方式的选择以及粘连程度和手术风险的评估。
