MSCT对肾上腺转移瘤与无功能腺瘤的鉴别诊断价值

Value of MSCT in Differential Diagnosis of Adrenal Metases and Nonfunctional Tumors

目的探讨多排螺旋CT(MSCT)对肾上腺转移瘤与无功能腺瘤的鉴别诊断价值。方法回顾分析经病理或临床证实的32例肾上腺转移瘤及9例无功能腺瘤的CT资料,包括平扫及增强扫查,并对原始图像进行多平面重组(MPR)。结果转移瘤多呈不规则或分叶状,33个瘤灶(84%)平扫CT值及强化程度>20Hu。无功能腺瘤7例呈类圆形,边界清楚,6例平扫及强化程度<20Hu,其中2例出现负CT值。8例瘤侧残存正常肾上腺。结论转移瘤与无功能腺瘤CT平扫密度、强化程度及是否瘤侧残存腺体有明显差异,可以鉴别。

Objective To evaluate the value of MSCT in differential diagnosis of adrenal metasis tumor and nonfunctional adenomas. Method The CT information of 32 cases of adrenal metasis tumor and 9 eases non- functional adenomas proved by pathology and clinic were analyzed retrospectively, including CT plain scanning and enhanced scanning. Then the source images were reconstructed with multi-planar reformation （MPR）. Re- suits Most of adrenal metastasis tumor were irregular or lobulated mass. The CT attenuation and enhancement degree of 33 tumors （84%）were more than 20Hu. 7 eases of nonfunctional adenonma were found as oval-like shape with clear edge. The normal adrenal beside tumor remained in 8 cases. The CT attenuation and enhenee- ment degree in 6 cases were less than 20Hu, including 2 cases whose CT value were below zero. Conclusions There are significant diffremces in CT plain scanning density, enhencement degree and the residual of between nonfunctional adenoma and metastasis tumor.