Imaging features of hepatic angiomyolipoma on CT and MRI
10.3760/cma.j.issn.1007-8118.2016.02.004
- VernacularTitle:肝脏血管平滑肌脂肪瘤的CT及MRI影像特征
- Author:
Jiejie ZHOU
;
Huazhi XU
;
Xiaojun ZHOU
;
Jiance LI
;
Guozhu MU
- Publication Type:Journal Article
- Keywords:
Hepatic angiomyolipoma;
Tomography;
Magnetic resonance imaging
- From:
Chinese Journal of Hepatobiliary Surgery
2016;22(2):82-85
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the imaging features of hepatic angiomyolipoma (HAML) on computed tomography (CT) and magnetic resonance imaging (MRI).Methods The imaging fingdings of 18 tumors which were pathologically diagnosed as HAML after surgery were analyzed retrospectively.Before operation,twelve and ten patients underwent CT and MRI non-contrast and dynamic enhanced scans,respectively,and 4 patients received both examinations.The imaging characteristics including the number,diameter,location,appearance of the lesions,plain and dynamic enhancement mode were analyzed.Results Eighteen HAML lesions were found in 18 patients with a diameter ranging from 1.5 cm to 17.2 cm (mean 5.3 cm).Five lesions manifested fatty content,and one showed hemorrhage and necrosis.Five HAMLs enhanced in a fast-in and fast-out mode,eleven in a fast-in and slow-out mode and two other lesions in an irregularly discrete mode.The arterial supply was found in 11 HAMLs in the hepatic arterial phase,all coming from intrahepatic arteries.Intratumoral vessels were observed in 12 HAMLs.Early draining veins to the hepatic vein (n =3) and portal vein (n =1) were detected in 4 HAMLs.One lesion demonstrated delayed enhancement in the pseudocapsule.Conclusion The detection of arterial supply and intratumoral vessels in a hypervascular hepatic tumor on contrast CT and MRI in a patient with a non-cirrhotic liver and normal AFP helps to make a diagnosis of HAML.
