副神经节瘤的影像学诊断

目的提高对副神经节瘤的影像学诊断水平。方法回顾性报告经手术病理证实的5例副神经节瘤的CT和MRI表现和复习有关文献。结果5例副神经节瘤均为无功能性良性肿瘤,分布在中轴线附近。颈静脉球瘤轮廓不规则并伴颅底骨质破坏;其他几例副神经节瘤呈圆形或类圆形,边缘清楚锐利。3例腹膜后副神经节瘤的CT平扫呈中等密度;颈静脉球瘤和颈动脉体瘤在MRI的T1W1呈等信号,在T2WI呈稍高信号;所有肿瘤在增强扫描中均有中等度到明显强化,中央囊变区不强化。颈静脉球瘤和颈动脉体瘤的瘤体内尚可见许多扭曲的流空血管。结论绝大多数副神经节瘤具有特定的发生部位和特定的影像学表现,结合临床可据此作出诊断。

Imaging diagnosis of paraganglioma

Objective To improve the understanding and diagnosis of paraganglioma. Methods The imaging finding in 5 cases of paragangliomas examined by CT or MRI with surgical - pathologic Results were retrospectively analysed. And the pertinent literature was reviewed. Results All of the 5 paragangliomas were unfunctioning and benign locating beside the spine. The margin of the glomus jugular tumor was irregular with bone destruction of the base of the brain ;the others presented as round or oval shape with definite edges. CT fingdings in 3 cases of retroperitoneal paragangliomas were middle density;The glomus jugular tumor and the carotid body tumor presented as iso - intensity signal on T1WI and slightly - high - intensity signal on T2WI;All of 5 paragangliomas showed moderate to marked enhancement on contrast images with cystic changes in some cases. The sign of flow voids representing intra -tumor Vessels was seen in the glomus jugular tumor and the carotiol body tumor on MRI images. Conclusion Most of paragangliomas have characteristic originations and imaging features, therefore a reliable diagnosis can is be made when combined with unique clinicle feature.