容易被忽视的肝单发转移瘤螺旋CT表现特点

目的：探讨肝单发转移瘤的螺旋CT影像学特点。方法：以12例肝单发转移瘤为研究对象，其中9例经手术病理证实，3例随访复查CT证实．均行肝脏CT平扫加动态增强扫描，回顾性分析肝单发转移瘤的CT特点。结果：肝单发转移瘤CT诊断难度较高，本组CT诊断正确5例。除了转移瘤的CT常见特点以外,肝单发转移瘤可有以下几点特殊征象：病灶直径小，边缘可有假包膜强化，门脉期可为等密度强化，肝周病灶可有包膜凹陷改变。结论：肝单发转移瘤的CT诊断难度大，但掌握它的特点，能够提高它的诊断符合率。

Spiral CT Features of Single Hepatic Metastasis

Objective:To investigate the spiral CT features of single hepatic metastasis.Methods:With 12 cases of single hepatic metastasis for research object,9 among those cases was confirmed by the surgical operation pathology,3 cases were confirmed with visit to countercheck CT,and all the cases in liver underwent CT scan,plus the dynamic enhanced scan,to retrospectively analyze the CT characteristics of single hepatic metastasis.It is of much more difficulty to diagnose the single hepatic metastasis with CT,and this group was diagnosed correct with five cases.Results:In addition to the fami- liar CT characteristics of the hepatic metastasis,the single hepatic metastasis has the following special symptoms:the diameter of lesion is small,and there is a false envelope to enhance the edge,equal density can be showed on enhancement in portal phase,the lesion around the liver has hollow change in envelope.Conclusion:The diagnosis of single hepatic metastsis is difficult,understanding the CT features could raise the correct diagnosis.