肝门部胆管癌超声造影与增强CT的对比研究

目的 探讨肝门部胆管癌超声造影(CEUS)和增强CT(CECT)特征及其应用价值.方法 32例经病理确诊的肝门部胆管癌患者共32个病灶同时接受了CEUS和CECT检查.CEUS采用造影剂声诺维和低机械指数实时超声成像技术.CECT采用造影剂优维显和常规双期增强扫描.结果 动脉期,肝门部胆管癌在CEUS和CECT上分别有14个(43.8%)和12个(37.5%)病灶表现为高增强,14个(43.8%)和9个(28.1%)等增强,4个(12.5%)和11个(34.4%)低增强(P=0.162);CEUS和CECT分别有3个(9.4%)和2个(6.3%)病灶表现为周边环状高增强,29个(90.6%)和30个(93.8%)为全瘤均匀(11个和9个)或不均匀(18个和21个)增强(P=1.000).门脉期,CEUS和CECT上分别有30个(93.8%)和23个(71.9%)病灶表现为低增强,1个(3.1%)和8个(25.0%)等增强,1个(3.1%)和1个(3.1%)高增强(P=0.046).普通超声、CEUS及CECT判断门静脉浸润准确率分别为84.2%(16/32)、89.5%(17/32)和78.9%(15/32).术前CEUS及CECT作出正确诊断的分别为30例(93.8%)和25例(78.1%)(P=0.125).结论 肝门部胆管癌在CEUS与CECT动脉期表现类似,门脉期CEUS更倾向于表现为低增强.术前CEUS与CECT对肝门胆管癌定性诊断能力相似.

Enhancement pattern of hilar cholangiocarcinoma: comparison between contrast-enhanced sonography and contrast-enhanced computed tomography

Objective To compare the enhancement pattern of hilar cholangiocarcinoma on contrast-enhanced sonography(CEUS) and contrast-enhanced computed tomography(CECT). Methods Thirty-two hilar cholangiocarcinoma lesions in 32 patients were evaluated by CEUS and CECT. CEUS was performed with contrast agent of SonoVue and low mechanical index contrast specific mode. CECT was performed with contrast media of Ultravist and a standard biphasic helical CT scanning protocol. Results In arterial phase of CEUS and CECT,the numbers of the lesions showing hyper-enhancement were 14 (43.8 % ) and 12 (37.5 % ), iso-enhancement were 14 (43.8%) and 9(28. 1%),hypo-enhancement were 4(12.5%) and 11(34.4%),respectively (P = 0. 162).Three lesions (9.4%) showed periphery rim-like hyper-enhancement and 29 (90.6%) showed diffuse homogeneous or heterogeneous enhanced of the whole tumor on CEUS, whereas for CECT the number were 2 (6. 3%) and 30 (93. 8%) respectively ( P = 1. 000). In portal phase, the numbers of the lesions showing hypo-enhancement on CEUS and CECT were 30 (93.8 % ) and 23 ( 71.90% ), iso-enhancement were 1 ( 3.1 % ) and 8 ( 25.0 % ), hyper-enhancement were 1(3. 1%) and 1 (3. 1%), respectively ( P = 0. 046). The portal vein invasion was correctly detected in 16 ( 84. 2 % ), 17 (89. 5 % ), 15 (78.9 % ) lesions with baseline ultrasound, CEUS and CECT, respectively. CEUS and CECT correctly diagnosed 30(93.8% ) and 25 (78. 1% ) lesions prior to operation (P = 0. 125). Conclusions The enhancement pattern of hilar cholangiocarcinoma on CEUS was similar with that on CECT in arterial phase, whereas in portal phase hilar cholangiocarcinoma was prone to show hypo-enhancement on CEUS. CEUS and CECT has similar diagnostie efficacy prior to operation.