周围型胆管细胞癌的CT动态增强扫描与病理对照分析

目的:探讨周围型胆管细胞癌CT动态增强扫描征象的诊断价值及其病理基础。方法:20例经手术证实的肝内周围型胆管细胞癌术前均做了CT平扫,其中18例做了CT动态增强扫描,20例均做病理检查。进行术前CT与病理标本对应切面的对照研究,观察不同CT征象的病理改变。结果:发现病灶内的延迟强化区CT表现具有一定特异性,病理为大量纤维组织伴少量散在腺癌组织,部分病灶延迟强化区内的无强化区为凝固性坏死或同时含有大量黏液的存活癌组织。结论:周围型胆管细胞癌的CT动态增强扫描征象对其诊断及在与肝细胞型肝癌等多种常见肝肿瘤的鉴别中有重要意义。

Dynamic Spiral CT for Detecting Intrahepatic peripheral cholangiocarcinoma

Objective To evaluate contrast-enhanced CT scan in the diagnosis of Intrahepatic peripheral cholangiocarcino- ma by correlating the CT appearances with pathologic specimens.Methods Twenty patients with pathologically proven intrahe- patie cholangiocarcinoma were examined Unenhanced abdominal CT study were performed in 20 patients;conventional eont- rastenhanced CT in 18 patients enhanced CT scan including fast injection.The preoperative and specimen CT scans were com- pared with the corresponding pathological sections.Results The areas of delayed contrast enhancement corresponded to areas of extensive fibrosis with minimal tumor in the pathological specinens.The unenhanced areas represented coagulation necrosis or tumor containing a large amount of mucus.Conclusion Dynamic Spiral CT scan was important techniques for the correct di- agnosis of intrahepatic peripheral cholangiocarcinoma,and was useful for differentiating these tumors from hepatocellular car- cinoma and other commom hepatic tumors.