海绵状血管瘤是成人最常见的一种原发性眶肿瘤。MRI的T_1WI上,其形态为界限明确的卵圆形肿块,与眼外肌呈均匀等强度。在T_2WI上,它较脂肪和肌肉呈均匀高信号强度。这种MRI特征对海绵状血管瘤无特异性,神经纤维瘤、血管周细胞瘤、神经鞘瘤或其它间充质肿瘤也可显示同样特征。作者介绍了2例快速静脉注射对比剂后用动态MRI显示眶海绵状血管瘤的连续强化。2例患者的肿瘤均手 Cavernous hemangiomas are the most common primary orbital tumors in adults. MRI T_1WI, the shape of a clear oval-shaped mass, and the extraocular muscle showed uniform intensity. On T_2WI, it shows a higher signal intensity than fat and muscle. This MRI feature is not specific to cavernous hemangiomas, and neurofibromas, pericytes, schwannomas, or other mesenchymal tumors may show the same characteristics. The authors describe the continuous enhancement of orbital cavernous hemangiomas with dynamic MRI after 2 cases of rapid intravenous contrast agent administration. Two patients had both hands with the tumor