眼球脉络膜转移癌的影像学

描述脉络膜转移癌的CT和MRI表现，对两种检查方法进行评估。材料和方法：回顾性分析经手术病理证实的9例脉络膜转移癌病例，其中7例经CT扫描检查，3例作MRI检查。结果：CT扫描显示眼球后部呈扁平状，均质中高密度肿块，有中度增强。MRI检查为扁平或半月状肿块，T1W呈高于玻璃体中等信号，PDW为高信号，T2W呈低信号。瘤体表面渗出性视网膜脱离在T1W和T2W均呈高信号。结论：CT和MRI对脉络膜转移癌等眼球内病变均可作出定位的影像学诊断。MRI对脉络膜转移癌与脉络膜黑色毒瘤的鉴别、瘤体内结构、与渗出性机网膜脱离的区分以及癌肿侵犯巩膜的情况较CT为优。

Imaging of Global Choroidal Cancer

To describe the CT and MRI findings with the metastatic choroidal caner, and evaluate the twomethods. Materials and Methods: 9 metastatic choroidal caner patents proven by surgical pathologywere analysed, 7 cases were scannned by CT, and 3 with MRI. Results: CT scan showed an flat, homogenous mass with moderate enhancement. MRI revealed intermediate signal intensities on T1WI and lowsignal intensities on T2WI. One case showed high signal intensities in PDWI. Conclusion: CT and MRIcan make imaging diagnosis for intraocular diseases(metastatic choroidal caner). MRI was superior thanCT for differentiating caner from choroidal melanomas or subretinal effusion detachment and revealedscleral involvement.