布加综合征的CT和MRI诊断

布加综合征(BCS)是一种因肝静脉流出道阻塞而导致的少见病变,本文对BCSCT和MRI表现进行了综述,CT和MRI检查可以显示直接征象即静脉阻塞的部位和范围,对于肝内外的侧支血管、肝尾叶增大、肝脏不均匀强化、再生结节等静脉阻塞间接表现也能较好显示,认识这些表现有助于病变的早期诊断和选择合适的治疗方法。

Budd-Chiari syndrome:CT and MRI findings

Budd-Chiari syndrome is an uncommon but often fatal disorder resulting from obstruction of hepatic venous outflow tract at the level of the hepatic veins,the inferior vena cava. The CT and MRI charac-teristics of Budd-Chiari syndrome are reviewed in this article especially for displaying the exact site and extent of the obstruction. In addition to this direct sign,the indirect findings of venous obstruction such as the presence of intra-and extrahepatic collateral veins,caudate lobe enlargement,inhomogeneous liver enhancement,and regenerative nodules can also be demonstrated. Awareness of these findings is important for early diagnosis and appropriate treatment.