Gore R M, Mathieu D G, White E M, Ghahremani G G, Panella J S, Rochester D
Department of Diagnostic Radiology, Evanston Hospital-McGaw Medical Center, Northwestern University, IL 60201.
AJR Am J Roentgenol. 1994 Jan;162(1):71-5. doi: 10.2214/ajr.162.1.8273693.
Passive hepatic congestion is caused by stasis of blood within the liver parenchyma due to compromise of hepatic venous drainage. It is a common complication of congestive heart failure and constrictive pericarditis, wherein elevated central venous pressure is directly transmitted from the right atrium to the hepatic veins because of their close anatomic relationship (Fig. 1). The liver becomes tensely swollen as the hepatic sinusoids dilate and engorge to accommodate the backflow of blood. A variety of structural and functional hepatic derangements develop that have distinctive appearances on sonograms, CT scans, and MR images.
被动性肝淤血是由于肝静脉引流受损导致肝实质内血液淤滞所致。它是充血性心力衰竭和缩窄性心包炎的常见并发症，由于肝静脉与右心房解剖关系密切，中心静脉压升高时，压力直接从右心房传递至肝静脉（图1）。随着肝血窦扩张和充血以容纳血液回流，肝脏会紧张性肿大。会出现各种肝脏结构和功能紊乱，在超声、CT扫描和磁共振图像上有独特表现。
