Department of Diagnostic Radiology, Research Institute of Clinical Medicine, Chonbuk National University Hospital and Medical School, Jeon Ju, South Korea.
Clin Radiol. 2010 Oct;65(10):801-8. doi: 10.1016/j.crad.2010.05.004.
To present computed tomography (CT) and magnetic resonance imaging (MRI) findings of cirrhosis-related benign nodules with ischaemia or infarction.
Sixteen consecutive patients (14 men and two women) who had been diagnosed with cirrhosis-related benign nodules with ischaemia or infarction after variceal bleeding based on the results of dynamic CT (n=15) and MRI (n=8) were included in this study. Five patients had histopathological confirmation via liver transplantation (n=2) and percutaneous biopsy (n=3). Images were analyzed for the enhancement pattern, signal intensities, location, and configuration of the lesions.
Most of the lesions were depicted as multifocal discrete or clustered nodules with some irregular patchy areas (size range 3-28 mm). They were predominantly found in subcapsular area or caudate lobe. Most nodular lesions were seen as hypoattenuating (hypointense) nodules with rim enhancement during dynamic CT or MRI. On T2-weighted images, nodular lesions were predominantly seen as target appearing hyperintense nodules. On follow-up images (range 2-24 months), most of the lesions disappeared or decreased in size.
CT and MRI can be used to demonstrate characteristic findings of cirrhosis-related benign nodules with ischaemia or infarction. Rapid resolution of the nodules at follow-up imaging can also be helpful for diagnosing these lesions.
介绍与肝硬化相关的良性结节伴缺血或梗死的 CT 和 MRI 表现。
本研究纳入了 16 例连续患者（14 名男性和 2 名女性），这些患者在静脉曲张出血后根据动态 CT（n=15）和 MRI（n=8）的结果被诊断为与肝硬化相关的良性结节伴缺血或梗死。5 例患者通过肝移植（n=2）和经皮活检（n=3）获得了组织病理学证实。对病变的增强模式、信号强度、位置和形态进行了分析。
大多数病变表现为多灶性离散或簇状结节，伴有一些不规则的斑片状区域（大小范围为 3-28mm）。它们主要位于包膜下区域或尾状叶。大多数结节性病变在动态 CT 或 MRI 上表现为低衰减（低信号）结节，伴有边缘增强。在 T2 加权图像上，结节性病变主要表现为靶征样高信号结节。在随访图像（范围 2-24 个月）上，大多数病变消失或缩小。
CT 和 MRI 可用于显示与肝硬化相关的良性结节伴缺血或梗死的特征性表现。在随访成像中结节的快速消退也有助于诊断这些病变。
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