摘要
目的：探讨肝上皮样血管内皮瘤（EHE）的CT和MR表现。方法：回顾性分析8例经病理证实的肝脏EHE的CT和MRI表现及临床资料,总结其影像特征,8例均行CT检查,6例同时行MRI检查。由2位腹部放射诊断医生共同阅片分析影像学特点。结果：8例EHE病灶均为多发,紧邻肝包膜下生长,直径为3.0-150 mm。CT平扫表现为低密度;MRI平扫T1WI为低信号,T2WI为高信号。动态增强CT/MRI示≥3 cm的病灶增强后有向心性强化倾向,〈3 cm的病灶呈边缘环形强化,门脉期及延迟期持续环形强化。另外肝脏EHE还显示“包膜回缩征”（n=6）和“棒棒糖征”,肝内静脉主干或分支终止于肿瘤的边缘（n=6）。结论：肝脏EHE在CT和MRI上表现具有一定特征性,尤其是紧邻肝包膜下生长,“棒棒糖征”、“包膜回缩征”及强化方式可为该病的鉴别诊断提供帮助。
Objective： To investigate the CT and MRI characteristics of hepatic epithelioid hemangioendothelioma（EHE）. Methods： CT and MRI findings were analyzed together with clinical data retrospectively in eight patients with hepatic EHE confirmed by pathology. Two patients underwent CT scan, and six patients underwent both CT and MR scan. The characteristics of tumors were retrospectively reviewed by two abdominal radiologists. Results Hepatic EHEs lesions were displayed as multiple and peripheral feature in location in all patients（8）, their diameters ranging from 3.0 mm to 150 mm. On CT scan, all of the hepatic EHEs were shown hypo-dense on CT scans, hypointense on T1WI and hyperintense on T2WI. During the arterial phase on CT/MR images, lesions size larger than 3 cm were shown a centripetal enhancement pattern, while lesions size smaller than 3 cm were shown depicted ring enhancement and continuous annular enhancement during the portal venous phase and the delayed phase. The signs of hepatic capsular traction （n=6） and lollipop, which the intrahepatic vein and its branches was terminated at the edge of the tumor （n=6）, were shown on EHEs＇ CT and MR images. Conclusion： Hepatic EHE has some special imaging characteristics findings on CT and MR image, such as the ＂lollipop＂ sign, ＂capsular retraction＂ sign and dynamic enhancement patterns, especially for those close to the hepatic subcapsular, and these findings could be helpful at differential diagnosis for hepatic EHE.
出处
《中国临床医学影像杂志》
CAS
北大核心
2015年第8期577-580,共4页
Journal of China Clinic Medical Imaging
关键词
肝肿瘤
血管内皮瘤
体层摄影术
X线计算机
磁共振成像
Liver neoplasms
Hemangioendothelioma
Tomography, X-ray computed
Magnetic resonance imaging
