The below diagram shows the epiploic foramen. Along the superior boundary the structure marked in the figure corresponds to:
Ans.B. Caudate lobe. Ref. Grays anatomy. Pg 1107
- The omental foramen (epiploic foramen, foramen of Winslow, or foramen epiploicum) is the passage between the greater sac and the lesser sac of the abdomen.
- The omental foramen has the following borders:
- Superior: The peritoneum that covering the liver (caudate lobe in particular)
- Inferior: The peritoneum that covering the duodenum and the hepatic artery.
- Anterior: The free border of the lesser omentum. This is known as the hepatoduodenal ligament.
- Posterior: The peritoneum that covers the inferior vena cava.
- Left lateral: The splenorenal and gastrosplenic ligaments.
The omental foramen can be remembered as lying between the two most significant veins of the abdomen – the portal vein and the inferior vena cava.