Among 66 specimens single valves were found in the azygos vein in 47 oases ( 83.9%), two valves, in 3 cases ( 5.4%) and no valves, in 6 oases ( 10.7%).

  • 在56例标本中,奇静脉瓣膜缺如者6例(10.7%),单个瓣膜者47例(83.9%),两个瓣膜者3例(5.4%)。

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