Arrivé L, Fléjou J F, Vilgrain V, Belghiti J, Najmark D, Zins M, Menu Y, Tubiana J M, Nahum H
Department of Radiology, Hôpital Saint-Antoine, Paris, France.
Radiology. 1994 Nov;193(2):507-12. doi: 10.1148/radiology.193.2.7972769.
To describe the magnetic resonance (MR) imaging features of hepatic adenoma and correlate these findings with histopathologic findings.
MR findings of 51 pathologically proved hepatic adenomas in 29 consecutive patients were retrospectively analyzed. T1- and T2-weighted spin-echo (SE) images were obtained in all patients, and contrast material-enhanced MR images were obtained in 16 patients.
At pathologic analysis, a peripheral rim, observed in 16 (31%) hepatic adenomas, corresponded to pseudocapsule, and tumor heterogeneity, observed in 26 (51%) lesions, corresponded to hemorrhagic necrosis and peliosis. Hyperintensity on T1-weighted SE images was observed in 30 (59%) adenomas; 10 (67%) of 15 hepatic adenomas were hyperintense on contrast-enhanced gradient-echo images, and 13 (45%) of 29 were hyperintense on delayed contrast-enhanced T1-weighted SE images.
Presence of a peripheral rim, heterogeneity, and hyperintensity are common features of hepatic adenoma.
描述肝腺瘤的磁共振（MR）成像特征，并将这些发现与组织病理学结果相关联。
回顾性分析29例连续患者中51个经病理证实的肝腺瘤的MR表现。所有患者均获得T1加权和T2加权自旋回波（SE）图像，16例患者获得对比剂增强MR图像。
病理分析显示，16个（31%）肝腺瘤中观察到的周边边缘对应于假包膜，26个（51%）病变中观察到的肿瘤异质性对应于出血坏死和血囊肿。30个（59%）腺瘤在T1加权SE图像上呈高信号；15个肝腺瘤中的10个（67%）在对比剂增强梯度回波图像上呈高信号，29个中的13个（45%）在延迟对比剂增强T1加权SE图像上呈高信号。
周边边缘、异质性和高信号是肝腺瘤的常见特征。
