小肝癌的螺旋CT不典型表现并与病理对照

目的探讨小肝癌(SHCC)在螺旋CT三期增强扫描中的不典型表现及其病理学基础。方法分析经手术病理证实的螺旋CT三期增强扫描中呈不典型表现的小肝癌30例共32个病灶的CT征象和病理学改变。结果30例共发现32个病灶为不典型表现,其中14个病灶在动脉期、门静脉期和延迟期中均呈低密度;10个病灶动脉期强化明显,门静脉期和延迟期为等密度或略高密度;8个病灶动脉期病灶边缘有环形或点状强化,门静脉期和延迟期仍有持续强化。结论SHCC在螺旋CT三期扫描中有多种不典型表现,病灶的血供情况、病理学基础等是产生不典型表现的常见原因。

Spiral CT Atypical Appearances of Small Hepatocellular Carcinoma with Pathologic Correlation

Objective To investigate the atypical appearances of small hepatocellular carcinoma(SHCC) with triple-phase spiral CT enhanced scan, and its correlation with the histopathology .Methods The atypical CT signs in triple-phase and histopathologic changes of SHCC confirmed pathologically in 30 cases (32 lesions) were analysed.Results 32 atypical lesions were found in 30 patients,of them,14 lesions were hypodense in hepatic arterial phase(HAP),portal venous phase(PVP) and delayed phase(DP).10 lesions enhanced markedly in the AP,while these lesions became isodense or slight hyperdense in the PVP and DP.8 lesions were enhanced as ring like or punctual shape in the AP,and constant enhancement in PVP and DP.Conclusion The atypical appearances are present in triple- phase spiral CT scan in SHCC,the pattern of blood supply and the base of histopathology are usually the cause of these findings .