眼眶淋巴管瘤的CT诊断价值

目的探讨眼眶淋巴管瘤的CT表现,提高术前诊断准确性。资料与方法回顾性分析经手术病理证实的8例眼眶淋巴管瘤的临床与CT表现,患者术前均行CT横断位扫描,其中5例加冠状位扫描,5例行增强扫描。结果8例中,3例表现为局限性肿块,呈椭圆形,位于肌圆锥外间隙;5例为弥漫性肿块,同时累及肌圆锥内外间隙及眼睑,形态不规则,边界不清楚。3例呈等密度（与眼外肌密度相比）,5例呈混杂密度,其中4例肿瘤内有囊性低密度,1例有高密度;增强的5例中,4例显示不均匀强化,1例不强化。结论常规CT扫描能清晰显示眼眶淋巴管瘤的部位、形态及内部结构,加上冠状位扫描能准确判断其位置与毗邻关系,为手术方案的制定提供可靠依据。

The Value of CT Diagnosis in the Orbital Lymphangioma

Objective To explore the CT findings of orbital lymphangioma and improve diagnostic accuracy of this disease. Materials and Methods Clinic and CT findings of 8 cases with orbital lymphangioma confirmed by operation and pathology were analyzed retrospectively. All cases were performed axial CT scan, and 5 cases with additional coronal CT scan, 5 cases with enhanced CT scan. Results 3 cases were located in the space out of muscle conus and showed an ovoid well-defined circumscribed masses. Diffuse masses were found in 5 cases presenting an irregular mass which involved the orbit and the eyelid. 3 cases appeared as isodensity with respect to the extraocular muscles, and heterogeneous masses displayed in 5 cases. 4 cases showed heterogeneous enhancement and 1 case showed no enhancement. Conclusion Conventional CT scan can clearly display the location, configuration and internal structures of orbital lymphangioma, which provides information for operation with additional coronal CT scan.