摘要
目的探讨肝脏炎性假瘤(IPL)的CT及MRI表现。方法搜集21例经手术病理或穿刺活检证实的IPL患者资料,回顾性分析其影像学表现。结果 21例IPL,18例单发,3例多发,共26个病灶。21例均行动态增强扫描(19例CT动态增强,2例MRI动态增强),16个病灶呈边缘花环状、葫芦状延迟强化;9个病灶三期均无强化;1个病灶动脉期边缘模糊强化,静脉期及平衡期消退。其中10例行CT平扫,均为单发低密度灶;3例行MRI平扫,共5个病灶,T2WI均呈稍高信号,1个病灶T1WI呈高信号,4个病灶T1WI呈等信号,仅1个病变DWI呈高信号。2个病灶内可见"血管漂浮征"。结论边缘花环状或葫芦状延迟强化、T2WI呈低、稍高信号及"血管漂浮征"等表现,能为IPL的诊断提供一定的帮助。
Objective To investigate CT and MRI manifestations of inflammatory pseudotumor of the liver （IPL）. Methods A total of 21 cases with pathologically-confirmed IPL were collected. The imaging findings were retrospectively analyzed. Results Of the 21 patients with IPL （26 lesions in total）, solitary lesion was seen in 18. Dynamic enhanced CT or MRI scanning was performed in all patients, including dynamic enhanced CT scanning in 19 cases and dynamic enhanced MRI scanning in two cases. Sixteen lesions took the form of peripheral-ring or gourd shape with delayed enhancement. Nine lesions showed no enhancement in all three phases. One lesion showed vague peripheral enhancement, which was faded away during venous and delayed phase. Plain CT scanning was employed in 10 cases, and the lesion was single with low-density in all cases. Plain MRI scanning was performed in 3 cases, and 5 lesions were detected. These five lesions were manifested as slightly hyperintense on T2WI. On Tl WI one lesion was hyperintense and four lesions were isointense. Only one lesion was hyperintense on DWI. Within two lesions ＂blood vessel floating＂ sign was seen. Conclusion Inflammatory pseudotumor of the liver has some imaging features, including peripheral-ring or gourd shape with delayed enhancement, low or slight higher signal on T2 WI, ＂blood vessel floating＂ sign, etc. , which are very helpful in making the diagnosis.
出处
《临床放射学杂志》
CSCD
北大核心
2014年第8期1201-1204,共4页
Journal of Clinical Radiology
关键词
肝脏
炎性假瘤
体层摄影术
X线计算机
磁共振成像
Liver Inflammatory pseudotumor Tomography,X-ray computed Magnetic resonance imaging
