肾周异位嗜铬细胞瘤的CT诊断

CT findings in ectopic pheochromocytoma surrounding kidney

目的探讨肾周异位嗜铬细胞瘤的CT表现。方法回顾性分析2008年1月-2011年6月经病理证实的肾周异位嗜铬细胞瘤21例共22个病灶的CT表现。结果 21例患者的22个病灶接受CT检查,平扫瘤体密度均匀者10例,不均匀者12例,2例内部有点状钙化;21个病灶表现为动脉期的显著强化,其中11例强化不均匀,内部有坏死或囊变区,1个病灶无明显强化。在行双期扫描中,病灶CT值在门脉期又有进一步增高,特点较为明显。结论 CT是肾周异位嗜铬细胞瘤定位、定性诊断的重要影像学检查方法,具有较典型的影像学特征。

【Objective】To study the CT findings in ectopic pheochromocytoma surrounding kidney.【Methods】CT findings in 22 pathologically-confirmed ectopic pheochromcytomas of 21 patients in January 2008 to June 2011 were reviewed retrospectively analyzed.【Results】CT was performed for 22 foci in 21 patients. CT plain scan finding was equivalent density in 10 cases. Enhancing scan showed a homogeneous intensification. Among the 22 foci with heterogeneous artery enhancement, homogenous density, inhomogeneous density, dotty calcification, and no obvious enhancement were observed in 10, 11, 2 and 1. Enhanced scan revealed gradual and obvious enhancement in21 foci, respectively.【Conclusions】CT scan is preferential pathway in ectopic pheochromocytoma surrounding kidney. The clinical manifestations and imaging characteristics of ectopic pheochromocytoma are relatively typical.