Omental (epiploic) foramen (of Winslow)
foramen omentale
An opening behind the free edge of the lesser omentum (the hepatoduodenal ligament). Its boundaries are: in front, the hepatoduodenal ligament, which contains the portal triad and the common bile duct.

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Related clinical cases
- Fluid in the omental bursa and hernia through the omental foramen