Ligamentum venosum
Ligamentum venosum
- Latin synonym: Chorda ductus venosi
- Latin eponym: Ligamentum Arantii
- Eponym: Ligament of Arantius
Definition
The ligamentum venosum is the fibrous remnant of the ductus venosus of the fetal circulation that shunts a portion of the umbilical vein blood flow directly to the inferior vena cava, bypassing the liver. Usually, it is attached to the left branch of the portal vein within the porta hepatis to the inferior vena cava. It may be continuous with the round ligament of liver (ligamentum teres hepatis).
It is invested by the peritoneal folds of the lesser omentum within a fissure on the visceral/posterior surface of the liver between the caudate and main parts of the left lobe.
It serves as an important anatomical landmark during liver surgeries, such as hepatectomies, to help delineate vascular structures and guide surgical approaches.
References
This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from http://www.wikipedia.org
Hur, MS., Kim, HJ. & Lee, KS. Termination of the ligamentum venosum and the topographic relationship between the left portal vein, left hepatic artery, and ligamentum venosum in the fissures for the ligamentum teres and ligamentum venosum. Surg Radiol Anat 37, 449–455 (2015). https://doi.org/10.1007/s00276-014-1367-6
