高分辨率螺旋CT检查对肾上腺转移瘤的诊断价值

目的 :总结肾上腺转移瘤的CT表现及特征 ,探讨螺旋CT检查对肾上腺转移瘤的鉴别诊断价值。方法 :搜集资料完整的 16例 (共 2 6个 )肾上腺转移瘤 ,分析转移瘤的大小、边缘、形态、密度及强化特征。结果 :本组 2 6个肾上腺转移瘤中直径最小 1.0cm ,最大 7.2cm ,边缘不光滑者占 5 2 %,形态不规则者占 5 8%,平扫密度不均匀者占 5 4%,69%增强后呈不均匀强化 ,且全部的肾上腺转移瘤均呈轻、中度强化 ,注药后 5min仍显示肿块内对比剂排空缓慢 ,其CT值与注药后 1min相比下降程度低于 5 0 %。结论 :高分辨率螺旋CT检查对绝大多数肾上腺转移瘤可作出正确诊断 ,有利于正确制订治疗方案。

The diagnostic value of high-resolution spiral CT in adrenal metastasis

Objective:To summarize CT features of adrenal metastasis and discuss the diagnostic value of high resolution spiral CT.Methods:Sixteen patients with 26 adrenal metastases enrolled into this study, focusing on the size, margin,density and enhancement pattern of the lesion. Results:The smallest diameter was 1cm in sixteen patients with 26 adrenal metastases and the biggest one was 7.2cm.These masses manifested ill defined margin in 52%,irregular shape in 58%,homogeneous density in 54% on plain CT scan,heterogeneous enhancement in 69% and slight or moderate enhancement in 100%. The washout of contrast material was slow and the CT value at 5min was about 50% of that at 1min.Conclusion:The high resolution spiral CT can make the qualitative diagnosis correctly in majority of adrenal metastases and has the advantage for planning the treatment accurately.