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目的 评价周围型肝内胆管细胞癌 (PCC)的动态MRI所见。方法 17例PCC病人造影后 ,早期、中期和晚期行动态MRI。评价项目包括肿瘤的增强形式及其与病理特征的关系、肿瘤周围的楔形增强区、肝内胆管的扩张、血管受累及肿瘤的肝外浸润征象。结果 早期的边缘部增强并伴随着造影时间推移的向心性增强是最常见的造影所见形式 (9例 )。在 17例病人中 ,10例可见到肿瘤周围的楔形增强区 ,11例可见胆管扩张 ,8例可见血管受累 ,2例可见肝外浸润。结论 增强形式与病理特征 (细胞和纤维化的数量及分布 )有关。早期的边缘部增强并伴随着造影时间推移的向心性增强可认为是PCC相对常见的特征。
Objective To assess the dynamic MRI findings of peripheral intrahepatic cholangiocarcinoma (PCC). Methods Dynamic MRI was performed early, mid and late in 17 patients with PCC. Evaluation items included the enhanced form of the tumor and its relationship with pathological features, wedge-enhancing regions around the tumor, dilation of the intrahepatic bile duct, vascular involvement, and extrahepatic infiltration signs of the tumor. RESULTS The enhancement of centripetal enhancement in the early marginal region with concomitant passage of time was the most common form of angiography (9 cases). Among the 17 patients, 10 cases showed a wedge-shaped enhancement zone around the tumor, 11 cases showed dilatation of the bile duct, 8 cases showed vascular involvement, and 2 cases showed extrahepatic infiltration. Conclusion The enhanced form is associated with pathological features (the number and distribution of cells and fibrosis). The enhancement of the centripetal enhancement in the early peripheries and accompanying the angiographic time progression can be considered as a relatively common feature of PCC.