The third assignment for my anatomical visualization class was to illustrate an anomalous left hepatic vein based on a journal article in Anatomical Science International published in 2002 which detailed a specific patient case. The gross lab was my primary reference for the assignment along with several other sources, including 3D models of the heart and liver. What made this assignment difficult was finding an angle of the heart sitting on the liver that didn’t block any of the important anomalous vessels such as the middle cardiac vein and posterior vein of the left ventricle. It was also surprisingly hard to find views of the liver other than straight anterior and posterior, so it took some work mentally rotating to see how it might look at different angles. I ended up using an inferoposterior view with a “cut-out” of the left hepatic vein to show the smaller veins draining into the right atrium (whose insertions would have been blocked otherwise). Here is the abstract from the article:
Persistent left hepatic venous connection with the right atrium and the ductus venosus
Cho Azuma, Yoshiyuki Tohno, Setsuko Tohno, Yumi Moriwake, Masako Utsumi and Masaoki Yamada Laboratory of Cell Biology, Department of Anatomy, Nara Medical University, Kashihara, Nara, Japan
An anomalous left hepatic vein opening independently of the coronary sinus into the right atrium was found in the cadaver of an 88-year-old Japanese man. This vein originated from the left lobe of the liver, perforated the diaphragm at the left side of the vena caval foramen and opened into the right atrium. The left hepatic vein anastomosed mutually with the middle hepatic vein at the level of venule. The ligamentum venosum originated from the left branch of the portal vein and was connected directly to the left hepatic vein. The development of the central systemic venous system and a possible explanation for the morphogenesis of this anomaly were reviewed. As a result, the occurrence of this anomalous vein was explained as being due to the persistence of the left vitelline connection with the left sinus horn and the ductus venosus.