肝脏局灶性结节增生的MRI与病理对照性分析  

Focal nodular hyperplasia of the liver: MRI and pathologic correlation

作　　者：王钦习[1] 于继徐[1] 高玉庆[1] 崔琳[2] 付强[1] 朱月莉[1] 安丰新[1] 

机构地区：[1]青岛市市立医院放射科,山东青岛266011 [2]青岛市市立医院病理科,山东青岛266011

出　　处：《医学影像学杂志》2006年第3期264-266,共3页Journal of Medical Imaging

摘　　要：目的:研究肝脏局灶性结节增生(FNH)的MRI表现和病理学表现及其它们的相关性。方法:回顾性分析9例经手术病理证实的FNH的MRI表现及其病理学表现。结果:FNH平扫T1WI 5例为等信号,4例为稍低信号;T2WI 3例为等信号,6例为稍高信号。7例病灶中心或偏心有瘢痕。动态增强扫描9例病灶在动脉期均呈明显均匀强化;门脉期和延迟期为轻度增强或等信号;7例病灶在延迟期出现瘢痕强化。FNH是多血供实质性肿块,肿瘤内部结构均匀,出血和坏死少见,镜下可见典型的星状瘢痕。结论:MRI平扫和动态增强扫描能够显示FNH的特征性表现,反映FNH的病理特点,提高FNH的确诊率。Objective： To evaluate the MR imaging features and the pathologic basis of focal nodular hyperplasia （FNH） of the liver. Methods： The MR imaging features of 9 FNH lesions confirmed by pathology were reviewed retrospectively and correlated with pathologic findings. Results： On unenhanced T1WI, 5 FNH lesions demonstrated isointensity, 4 lesions were slightly hypointense; on T2WI, 3 lesions were isointense, 6 lesions were slightly hyperintense. The scars were shown in 7 lesions. In the arterial phase of dynamic contrast-enhanced MRI, 9 FNHs were markedlyhyperintense, and isointense or slightly hyperintense in the portal and delayed phase. The scars of 7 lesions were enhancd in delayed phase, FNH is solid mass with vast blood supply, its inside structure is homogerneous, hemorrhage and necrosis are seldom. Typical stellate scars can be found by microscopic examination. Conclusion： The combination of unenhanced and dynamic contrast-enhanced MRI is capable of showing the typical images of FNH and reflecting the pathologic characteristics. It increases the sensitivity in diagnosing FNH of liver.

关 键 词：肝肿瘤 局灶性结节增生 磁共振成像 病理学 

分 类 号：R575.29[医药卫生—消化系统] R445.2[医药卫生—内科学]