摘要
Abstract
Objective:To study the value of CT and magnetic resonance imaging (MRI) in diagnosing intrahepatic cholangio-carcinoma (ICC). Methods: A total of 29 cases of ICC confirmed by surgery and biopsy pathology were enrolled in this study. 15 cases of them underwent multiphase spiral CT scan without and with contrast enhancement, 16 cases (2 of them had concurrent CT scan) underwent plain and dynamic enhanced MRI examination. Tumor morphology, the imaging features of CT and MRI, as well as ancillary signs were reviewed retrospectively. Results: Of the 29 cases of ICC,totally 32 lesions were revealed, distributed in cither left or right hepatic lobe. Totally 17 lesions were detected by CT. Among them, only 1 lesion showed mixed-density, the other 16 lesions showed low-density. After contrast administration,on arterial phase, 10 lesions showed peripheral enhancement^ lesions showed mild heterogeneous enhancement, 1 lesion showed no enhancement; on portal venous phase period, 12 lesions showed progressive enhancement and 5 lesions showed decreased enhancement. In the 16 cases underwent MRI, 17 lesions were found. All of the 17 lesions showed irregular and mixed intensity on TjWI and T2WI. After dynamic contrast enhancement, on arterial phase, 16 lesions demonstrated peripheral enhancement, only 1 lesion showed no enhancement; on portal venous phase and delay period, 15 lesions demonstrated progressive contrast enhancement within the solid part of the tumor and filling enhanced degree of enhancement is more obvious, 1 lesion was significantly enhanced to keep the edge of a thick ring of tumor, 1 lesion was enhancement decreased. Subsidiary signs induded biliary duct dilatation in 15 cases, capsular retraction of hepatic parenchyma in 2 cases,hepatic atrophy in 1 case,and portal vein tumor thrombus in 4 cases. Conclusions: To some extent,the CT and MRI features of ICC arc characteristic. Dynamic enhancement scan is an important method for the diagnosis and differential diagnosis of ICCs. Detailed prcopcrativc imaging is important for the early detection of ICC.关键词
肝肿瘤/胆管细胞癌/X线计算机/磁共振成像/动态增强Key words
Hepatic neoplasms/ Cholangiocarcinoma/ X-ray computed/ Magnetic resonance imaging/ Dynamic enhancement分类
医药卫生
