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It is well documented that the embryonic vitelline vein contributes to the portal venous system, developing at 5 weeks gestation. It is suggested that after its partial regression, the left vitelline vein ultimately remains as the superior mesenteric vein (SMV) (Franceschi et al. 2022; Marks 1969). However, a 2017 study of 5- to 6-week-old embryos suggested that the SMV develops instead from a tissue cleft formed by the regression of the left vitelline vein in a peritoneal fold of the midgut mesentery (Abe et al. 2017).

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Superior Mesenteric Vein

  • 章节

  • 发表日期：

    2025年

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  • Hannah Kulba,
  • Annie Syed

摘要

It is well documented that the embryonic vitelline vein contributes to the portal venous system, developing at 5 weeks gestation. It is suggested that after its partial regression, the left vitelline vein ultimately remains as the superior mesenteric vein (SMV) (Franceschi et al. 2022; Marks 1969). However, a 2017 study of 5- to 6-week-old embryos suggested that the SMV develops instead from a tissue cleft formed by the regression of the left vitelline vein in a peritoneal fold of the midgut mesentery (Abe et al. 2017).