摘要
目的 探讨肝细胞腺瘤 (HA)的CT和MRI表现。方法 回顾性分析经手术病理证实的 9例HA的影像资料 ,其中CT和MRI扫描各 8例。结果 CT平扫呈等或略低密度影 4/6例 ;CT增强扫描动脉期表现为均匀或不均匀明显高密度影 4/6例 ;门静脉期表现为高密度或略高密度 6/8例 ;3 /5例在延迟期扫描表现为等密度。 2例增强及延迟扫描均为低密度的病灶 ,病理显示其内明显脂肪变。 7/8例在MR的T1WI为均匀或不均匀的高信号影 ,8/8例T2WI表现为均匀或不均匀中高信号影 ;MRI的动态增强扫描与CT增强扫描类似。结论 影像检查能够正确诊断大部分肝脏腺瘤病例 ,MRI对显示HA病理特征优于CT。
Objective To study the imaging features of hepatocellular adenoma(HA) on CT and MRI. Methods Imaging findings of 9 patients with histopathologically proven HA were retrospectively analyzed. Results The mean size of HA was 5 cm (3-12 cm). Four of 6 cases showed iso density or slight hypodensity on plain CT, while homogeneous or heterogeneous hyperdensity on arterial phase in 4/6 cases, hyperdensity or slight hyperdensity on portal venous phase in 6/8 cases, and iso density in 3/5 on delayed phase on CT. Two HA lesions were demonstrated as homogeneous hypodensity on all phases of post contrast scans which were corresponded to the fatty degeneration pathologically. Lesions showed homogeneous or heterogeneous hyperintensity in 7/8 on T1WI, and homogeneous or heterogeneous moderate hyperintensity in 8/8 on T2WI on MRI. Findings on dynamic enhanced MR imaging were similar to the enhance pattern of CT. Conclusion Correct imaging diagnosis is possible in majority of HA. MRI was better than CT on revealing the pathologic features of HA.
出处
《中国医学影像技术》
CSCD
北大核心
2005年第1期80-82,共3页
Chinese Journal of Medical Imaging Technology
关键词
肝肿瘤
肝细胞腺瘤
体层摄影术
X线计算机
磁共振成像
Liver neoplasm
Hepatocellular adenoma
Tomography X-ray computed
Magnetic resonance imaging
