单词paraumbilical-vein
网络: 附脐静脉；脐旁静脉；旁脐静脉
The anterior collateral-paraumbilical vein is not an important collateral and it occurs solitarily in 2. 8% of cases.
向前的侧枝-脐周围静脉并不是很重要的侧枝循环单独发生的机会只有2.