Zhang Qing, Zhu Qing-li, Jiang Yu-xin, Zhang Bo, Dai Qing, Lou Hai-ya
Department of Ultrasound, PUMC Hospital, CAMS and PUMC, Beijing 100730, China.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2010 Oct;32(5):561-4. doi: 10.3881/j.issn.1000-503X.2010.05.018.
To investigate the sonographic and computed tomography (CT) features of hepatic angiomyolipoma (HAML).
Sonographic and CT findings were analyzed in 12 patients (9 females and 3 males) with pathologically proved HAML. The size, margin, location, gray scale, and color Doppler flow imaging characteristics were observed.
HAML was located correctly with ultrasound in all patients. The sonographic features of 12 HAML included regular shape, clear margin, and three type of echoes including homogeneous hyperechoes (n=5), heterogeneous internal echoes (n=5), or homogeneous hypoechoes (n=2). The arterial flow signal was detected in two HAML. The CT findings included adipose density (n=3), soft tissue density (n=3), and mixed density (n=6). The sonographic and CT findings were correlated with the composition and distribution of fat, vessels, and smooth muscle tissue.
Fatty tissues within HAML shows typical imaging findings. The ultrasonographic and CT have their own advantages in detecting the fatty tissue inside HAML, and therefore a combination of these two techniques may increase the diagnostic accuracy of HAML.
探讨肝脏血管平滑肌脂肪瘤（HAML）的超声及计算机断层扫描（CT）特征。
对12例经病理证实的HAML患者（9例女性，3例男性）的超声及CT表现进行分析。观察其大小、边界、位置、灰度及彩色多普勒血流成像特征。
所有患者的HAML均能被超声准确定位。12例HAML的超声特征包括形态规则、边界清晰，回声类型有均匀高回声（5例）、内部回声不均匀（5例）或均匀低回声（2例）。2例HAML检测到动脉血流信号。CT表现包括脂肪密度（3例）、软组织密度（3例）和混合密度（6例）。超声和CT表现与脂肪、血管及平滑肌组织的组成和分布相关。
HAML内的脂肪组织具有典型的影像学表现。超声和CT在检测HAML内的脂肪组织方面各有优势，因此两种技术联合应用可提高HAML的诊断准确性。
