WordNet

a natural opening or perforation through a bone or a membranous structure (同)hiatus
marine microorganism having a calcareous shell with openings where pseudopods protrude (同)foraminifer

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(骨・植物などの)孔(こう),開口

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/11/30 05:58:32」(JST)

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In human anatomy, the omental foramen (epiploic foramen, foramen of Winslow after the anatomist Jacob B. Winslow, or uncommonly aditus; Latin: Foramen epiploicum), is the passage of communication, or foramen, between the greater sac (general cavity (of the abdomen)), and the lesser sac.

Borders

It has the following borders:

anterior: the free border of the lesser omentum, known as the hepatoduodenal ligament. This has two layers and within these layers are the common bile duct, hepatic artery, and hepatic portal vein. A useful mnemonic to remember these is DAVE: Duct, Artery, Vein, Epiploic foramen.
posterior: the peritoneum covering the inferior vena cava
superior: the peritoneum covering the caudate lobe of the liver
inferior: the peritoneum covering the commencement of the duodenum and the hepatic artery, the latter passing forward below the foramen before ascending between the two layers of the lesser omentum.
left lateral: gastrosplenic ligament and splenorenal ligament

As the portal vein is the most posterior structure in the hepatoduodenal ligament, and the inferior vena cava lies under the posterior wall, the epiploic foramen can be remembered as lying between the two great veins of the abdomen.

Additional images

Diagram to show the lines along which the peritoneum leaves the wall of the abdomen to invest the viscera.
Epiploic foramen

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

foramen.aspx "Omental foramen" Check |url= value (help). Medcyclopaedia. GE.
Anatomy photo:37:08-0100 at the SUNY Downstate Medical Center – "Abdominal Cavity: The Omental Foramen"
Anatomy image:7826 at the SUNY Downstate Medical Center
Anatomy image:7831 at the SUNY Downstate Medical Center
Anatomy image:7875 at the SUNY Downstate Medical Center
peritoneum at The Anatomy Lesson by Wesley Norman (Georgetown University)
abdominalcavity at The Anatomy Lesson by Wesley Norman (Georgetown University) (xsectthrulesseromentum)

UpToDate Contents

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1. 卵円孔開存 patent foramen ovale
2. 小児における、心房中隔欠損（ASD）の分類および孤立性ASDの臨床的特徴および診断 classification of atrial septal defects asds and clinical features and diagnosis of isolated asds in children
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5. 成人における脳卒中予防のための心房中隔異常（PFO、ASDおよびASA）の治療 treatment of atrial septal abnormalities pfo asd and asa for prevention of stroke in adults

English Journal

Development of a new laparoscopic Foramen Epiploicum Mesh Closure (FEMC) technique in 6 horses.

van Bergen T1, Wiemer P2, Bosseler L3, Ugahary F4, Martens A1.
Equine veterinary journal.Equine Vet J.2015 Feb 11. doi: 10.1111/evj.12427. [Epub ahead of print]
REASONS FOR PERFORMING STUDY: Epiploic foramen entrapment (EFE) is, based on the number of reports in the literature, a relatively important life-threatening cause of colic in horses that could be prevented by closing the epiploic foramen (EF) in horses at risk of developing EFE.OBJECTIVES: To descr
PMID 25676675

Herniation through the foramen of Winslow. Report of two cases.

Evrard V1, Vielle G, Buyck A, Merchez M.
Diseases of the colon and rectum.Dis Colon Rectum.1996 Sep;39(9):1055-7.
PURPOSE: Two clinical cases of internal herniation through the foramen of Winslow are presented. The first case concerns herniation of the cecum and ascending colon. In the second patient, the ileum was herniated through the foramen epiploicum.METHODS: Preoperative assessment of clinical and radiolo
PMID 8797659

[Herniation of the cecum and ascending colon through the foramen epiploicum].

Christen D1, Britschgi F, Buchmann P, Müller C.
Der Chirurg; Zeitschrift für alle Gebiete der operativen Medizen.Chirurg.1991 Jan;62(1):65-7.
PMID 2026074

「網嚢孔」

Omental foramen
	Horizontal disposition of the peritoneum in the upper part of the abdomen.
	Entry to omental bursa (black arrow) by omental foramen (white mark)
Details
Identifiers
Latin	foramen omentale
TA	A10.1.02.403
FMA	14711
	Anatomical terminology [edit on Wikidata]