Iwao T, Toyonaga A, Kim M, Sumino M, Ikegami M, Oho K, Ikeda H, Majima Y, Sasaki E, Tanikawa K
Second Department of Medicine, Kurume University School of Medicine, Japan.
Intern Med. 1993 Jun;32(6):462-4. doi: 10.2169/internalmedicine.32.462.
The contribution of the intrahepatic portal branch to the gastroesophageal varices is rare. This anomalous pathway (a large left intrahepatic portal branch) was proved by portographic study and by imaging techniques in a 54-year-old man with cirrhosis. The overall prevalence of this type of collateral in the literature is only 1.9% in 908 patients with portal hypertension. In addition, all are via the left portal venous branch. It may be speculated that the mechanism of this variation is due to dilatation of the rest of the intrahepatic portal system via a small anastomosis due to portal hypertension.
肝内门静脉分支对胃食管静脉曲张的影响较为罕见。在一名54岁的肝硬化男性患者中，通过门静脉造影研究和成像技术证实了这种异常路径（粗大的左肝内门静脉分支）。在908例门静脉高压患者中，文献报道的此类侧支循环的总体发生率仅为1.9%。此外，所有病例均通过左门静脉分支。可以推测，这种变异的机制是由于门静脉高压通过一个小吻合口导致肝内门静脉系统其余部分扩张。
