摘要
目的:探讨肝局灶性结节性增生(FNH)CT表现。方法:回顾性分析经病理证实的12例FNH的CT表现,所有病例术前均行CT平扫及双期增强扫描,并对其CT表现及其病理学进行对照分析。结果:12例FNH病灶均呈孤立结节或分叶状肿块,其中10例位于近肝表面包膜下,直径2～6cm。平扫呈等或稍低密度,增强扫描动脉期均为明显全瘤均匀性强化,强化高于正常肝组织而接近于同层腹主动脉,门静脉期9例下降到稍高密度,3例为等密度,其中4例显示典型中央瘢痕组织,1例中央瘢痕延迟扫描后出现强化。12例FNH病灶均无包膜,为孤立的、中央有纤维瘢痕的结节肿块,纤维瘢痕中可见厚壁血管及增生的小胆管。结论:CT可明确诊断典型的FNH。
Objective：To investigate the CT findings of hepatic focal nodular hyperplasia（FNH）.Methods：12 cases with pathology proved hepatic FNH underwent plain and dual-phase enhanced CT scans,the imaging features were analysed retrospectively and correlated with pathology.Results：All 12 cases of FNH had solitary globular or lobulated mass,10 cases located peripherally under the liver capsule,the diameter ranged from 2～6cm.The FNH were iso-or slightly hypo-attenuated on plain CT and marked homogeneously enhanced after contrast administration,with the density closed to that of abdominal aorta during the arterial phase,slightly higher than normal liver parenchyma in 9 cases and iso-attenuated in 3 cases during the portal venous phase.Typical central scar was showed in 4 cases and 1 case with central scar showing delayed enhancement.All of the 12 FNHs had no capsule on pathology,showing solitary and nodular mass with central fibrous scar that contained thick-wall blood vessels and bile duct proliferation.Conclusion：Typical FNH can be accurately diagnosed by CT.
出处
《放射学实践》
2008年第9期1018-1020,共3页
Radiologic Practice
