关键词: font-size:medium, ">肝内胆管细胞癌；CT；影像学征象；分型；肿块型；管周浸润型

Abstract: Objective： To explore the CT imaging features of different types of intrahepatic cholangiocarcinoma (ICC). Methods：37 patients with ICC confirmed by pathologic diagnosis after surgery were enrolled， who were admitted in our hospital from June 2017 to December 2019. The CT imaging features of different types of ICC were analyzed retrospectively. Results： In this study， there were 23 males (62.2%) and 14 females(37.8%) in 37 involved patients，and the age range were from 43 to 68 years old， and the average age was (55.7±7.2) years. According to the growth mode， tumors were divided into the mass type and periductal infiltrating type. 29(78.4%) cases were mass type， of which 18 cases were located in the left hepatic lobe， and 11 cases were located in the right liver lobe， with diameter of 3.0-11.5 cm. The tumor shape was irregular. The CT imaging features of mass type were hepatic capsule contraction， fish mesh， delayed enhancement and bile duct dilatation. 8 cases (21.6%) were periductal infiltration type， which were located in the left hepatic lobe， presenting as dendritic or long strips. CT scanning showed the atrophy of the lateral section of left hepatic lobe， and dynamic contrast enhanced CT showed the progressive moderate enhancement of the thickening tube and luminal stenosis. Conclusion：CT images features of mass type and periductal infiltrating type of ICC have characteristic changes， which are helpful for clinical diagnosis.

Key words: font-size:medium, ">Intrahepatic cholangiocarcinoma； Computed tomography (CT)； Imaging features； Classification； Mass type； Periductal infiltrating type