目的 分析腹膜后副神经节瘤的 CT表现，总结其影像特征，提高CT诊断水 平。方法 回顾性分析17例有病理结果并 有完整CT图像的患者资料，用FUJI FILM 工作站对图像观察病灶形态、大小和密度 并进行冠状位重建，分析其CT平扫及强化 特征。结果 17例患者全部做了三期增强 扫描及冠状位重建。所有病灶形态均呈类 圆形或不规则形，其密度表现均匀或不均 匀，部分可见分叶征及钙化。所有病例增 强均呈明显强化，以门脉期出现强化最大 值为常见，5例动脉期可见小血管影。结 论 腹膜后副神经节瘤CT平扫及增强表现 具有一定的特征，结合重建及临床可作出 诊断或鉴别诊断。

Objective To analyze the CT findings of retroperitoneal paraganglioma, summarize its imaging features and improve the level of CT diagnosis. Methods The CT findings of 17 cases of patients with retroperitoneal paraganglioma, which were confirmed by pathological, were analyzed retrospectively. The plain and enhanced CT images and coronal reconstruction images features were analyzed in FUJI FILM workstations. The measureent was made including the form, size and image density of the lesions. Results 17 patients all made three periods of enhanced scan and coronary reconstruction. All lesions showed a kind of circular or irregular shape, the uniform or non-uniform density performance. Some lesions showed a sign of lobulation and calcification. All cases are in obviously enhanced, the maximum enhancement phase is at portal phase. 5 cases showed small vessels in arterial phase. Conclusion Retroperitoneal paraganglioma has some features in plain CT scan and enhanced CT scan, combined with reconstruction and clinical can make a diagnosis or differential diagnosis.