Cavalcanti J S, Andrade L P, Moreira I E, Rietra P H, Oliveira M L
Department of Anatomy, Federal University of Pernambuco, Recife, Brazil.
Surg Radiol Anat. 1995;17(4):311-4. doi: 10.1007/BF01795188.
The authors studied the morphological and structural aspects of the junctions between the hepatic veins and the inferior vena cava. The study was carried out on 20 specimens obtained from adult cadavers of both sexes, fixed in 10% formaldehyde solution. The hepatic veins with their junctions on the inferior vena cava were isolated. Then a macroscopic analysis of the openings of the hepatic veins into the inferior vena cava was performed. Part of this material was embedded in paraffin, submitted to serial sectioning and stained with Azan's trichrome and resorcin-fuchsin. Three hepatic veins were observed in all cases: right, left and the middle. In 20% of the cases the middle hepatic vein opens directly into the inferior vena cava. The hepatic vein openings are supported by two pillars inferiorly united through a semilunar fold. The hepatic vein wall is greatly thickened at the level of its junction with the inferior vena cava, showing a large amount of muscular and collagenous fibers. These bundles constitute a sphincter-like formation which may play a physiological role in the control of the hepatic circulation.
作者研究了肝静脉与下腔静脉连接处的形态学和结构方面。该研究在20个取自成年男女尸体的标本上进行，标本固定在10%甲醛溶液中。分离出在下腔静脉上有连接处的肝静脉。然后对肝静脉在下腔静脉的开口进行宏观分析。部分材料用石蜡包埋，进行连续切片，并用阿赞三色染色法和间苯二酚品红染色。所有病例均观察到三条肝静脉：右肝静脉、左肝静脉和中肝静脉。在20%的病例中，中肝静脉直接开口于下腔静脉。肝静脉开口下方由两个支柱支撑，这两个支柱通过一个半月形皱襞相连。肝静脉壁在其与下腔静脉连接处显著增厚，显示出大量的肌纤维和胶原纤维。这些束构成一种类似括约肌的结构，可能在肝循环的控制中发挥生理作用。
