CAJ | 학술논문

目的评估MR诊断肝脏多发局灶性结节性增生(focal nodular hyperplasia,FNH)的价值.方法回顾性分析经病理证实的9例多发FNH的MR表现,并与部分病灶病理所见对照.结果 9例诊断均考虑到FNH的可能性,5例第一诊断考虑为FNH,3例第一诊断考虑为肝腺瘤,1例第一诊断考虑为纤维板层型肝癌.9例共31个病灶,T2WI 19个呈稍高信号、12个呈等信号;T1WI上12个呈稍低信号、7个呈等信号、12个呈高信号;反相位成像1个病灶局部信号略有减低.注射Gd-DTPA后,动脉期18个病灶轻度至明显不均匀强化、11个病灶显著均匀强化、1个病灶中度不均匀环形强化、1个病灶未见异常强化;门静脉期和延迟期31个病灶均逐渐呈等信号或稍高信号.共16个病灶出现中央瘢痕,瘢痕延迟期强化.结论多发FNH有特征性表现,大部分病例MR能正确诊断.
목적 평고MR진단간장다발국조성결절성증생(focal nodular hyperplasia,FNH)적개치.방법 회고성분석경병리증실적9례다발FNH적MR표현,병여부분병조병리소견대조.결과 9례진단균고필도FNH적가능성,5례제일진단고필위FNH,3례제일진단고필위간선류,1례제일진단고필위섬유판층형간암.9례공31개병조,T2WI 19개정초고신호、12개정등신호;T1WI상12개정초저신호、7개정등신호、12개정고신호;반상위성상1개병조국부신호략유감저.주사Gd-DTPA후,동맥기18개병조경도지명현불균균강화、11개병조현저균균강화、1개병조중도불균균배형강화、1개병조미견이상강화;문정맥기화연지기31개병조균축점정등신호혹초고신호.공16개병조출현중앙반흔,반흔연지기강화.결론 다발FNH유특정성표현,대부분병례MR능정학진단.
Objective To assess the diagnostic value of MRI on multiple focal nodular hyperplasia (FNH) of the liver. Methods MR images of 9 cases with pathological-confirmed multiple FNH were retrospectively analyzed. MRI features of the lesions were correlated with pathological findings. Results Multiple FNH was considered in all these 9 cases. Among them, the primary diagnosis was FNH in 5,hepatic adenoma in 3 and fibrolamellar hepatocellular carcinoma in 1 case. A total of 31 lesions were detected in the 9 cases. On T2WI, 19 lesions presented slightly high-signal intensity, and the other 12 presented iso-signal intensity. On T1WI, 12 lesions presented slightly low-signal intensity, 7 presented iso-signal intensity, and the other 12 presented high-signal intensity. On opposed-phase, the signal intensity of 1 lesion dropped unevenly. After bolus injection of contrast agent Gd-DTPA, in hepatic arterial phase 18 lesions showed mild to marked heterogeneous enhancement, 11 showed marked homogeneous enhancement, 1 showed moderate ring-like enhancement, and the last one did not have obvious enhancement In portal venous and delayed phase, all the lesions turned to iso- or slightly high-signal intensity gradually. Sixteen of 31 lesions presented central scar, which demonstrated mild star-like enhancement in delayed phase. Conclusion Multiple FNH presented certain MRI features, which contributed to the preoperative diagnosis.