高分化肝细胞癌的MRI表现

发布时间：2018-03-01 16:02

本文关键词： 肝细胞癌高分化 MRI　出处：《中国现代医学杂志》2015年18期 　论文类型：期刊论文

【摘要】：目的探讨高分化肝细胞癌的MRI表现。方法回顾性分析14例经病理证实的原发性高分化肝细胞癌的MRI表现。结果 16个病灶,分别位于:肝右叶11个,肝左叶5个(外生型病灶1个)。大部分病灶呈类圆形,最大直径约11 cm,最小约0.5 cm,中位值约2.5 cm。平扫:压脂T1WI呈低信号11个,略低信号2个,等信号3个;同反相位信号无明显差异13个,反相位信号部分降低3个;压脂T2WI呈中等高信号11个,稍高信号3个,等信号2个;DWI呈中等程度高信号9个,稍高信号5个,等信号2个。增强扫描:动脉期呈明显强化13个,中度强化2个,轻度强化1个,门脉期及平衡期强化程度均降低,但14个病灶其信号仍高于同期肝实质信号,2个病灶门脉期呈高信号,平衡期呈等信号。12个病灶出现假包膜强化,其中8个病灶包膜完整,4个病灶包膜不完整,包膜平衡期强化明显。4个病灶未见假包膜,病灶直径均1 cm。结论高分化肝细胞癌的MRI影像表现具有特征性表现,大部分病例可准确诊断。
[Abstract]:Objective to investigate the MRI findings of well-differentiated hepatocellular carcinoma (HCC). Methods the MRI findings of 14 cases of primary well-differentiated hepatocellular carcinoma (HCC) confirmed by pathology were retrospectively analyzed. Results Sixteen lesions were located in the right lobe of the liver, 11 in the right lobe, 11 in the right lobe, 11 in the right lobe of the liver. There were 5 (1 exogenetic lesion) in the liver. Most of the lesions were round, the maximum diameter was about 11 cm, the minimum was about 0.5 cm, and the median value was about 2.5 cm. Plain scan showed low signal intensity on T _ 1WI (n = 11), slightly hypointensity on T _ 1WI (n = 2) and equal signal intensity (n = 3). There were no significant differences in 13 signals with inverse phase, 3 with partial decrease of inverse phase signal, 11 with medium high signal on T2WI, 3 with slightly high signal, 9 with moderate high signal and 5 with slightly high signal on iso-signal DWI. Enhancement scan showed obvious enhancement in arterial phase (13 cases), moderate enhancement (2 cases), mild enhancement (1 case), and decreased enhancement in portal phase and balance phase (P < 0 05). However, the signal intensity of 14 lesions was still higher than that of liver parenchyma at the same time, 2 lesions showed high signal intensity in portal phase and isointense signal in equilibrium phase, 12 lesions had pseudocapsule enhancement, 8 lesions had intact capsule, 4 lesions had incomplete capsule. No pseudocapsule was found in the 4 lesions and the diameter of the lesions was 1 cm. Conclusion the MRI findings of well-differentiated hepatocellular carcinoma are characteristic and can be accurately diagnosed in most cases.
【作者单位】：福建医科大学附属泉州第一医院影像科;福建医科大学附属泉州第一医院病理科;
【分类号】：R735.7;R445.2

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