The passage, below and behind the portal hepatis, connecting the two sacs of the peritoneum; it is bounded anteriorly by the hepatoduodenal ligament and posteriorly by a peritoneal fold over the inferior vena cava.
Synonym: foramen omentale, foramen epiploicum, aditus ad saccum peritonei minorem, Duverney's foramen, Winslow's foramen.
(05 Mar 2000)