What are the boundaries of the epiploic foramen?
What are the boundaries of epiploic foramen?
- Anteriorly: free edge of lesser omentum containing within its layers: Bile duct (in front and to the right) Hepatic artery (in front and to the left0.
- Posteriorly: Inferior vena cava covered by peritoneum.
- Superiorly: Caudate process of liver.
- Inferiorly: 1st part of duodenum.
What forms the superior boundary of the epiploic foramen?
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.
What are the borders of the lesser sac?
Boundaries
- anterior. lesser omentum.
- left lateral. gastrosplenic and splenorenal ligaments.
- right lateral. epiploic foramen (of Winslow) communicating with greater sac.
- posterior. visceral/parietal peritoneum that covers diaphragm, pancreas, left kidney/adrenal gland, and duodenum.
- superior.
What is the caudate lobe?
The caudate lobe represents the only part of the liver that is in contact with the vena cava, except at the entrance of the main hepatic veins into the vena cava, and provides an anastomosis between the hepatic veins and vena cava.
What is in the portal triad?
The portal triad contains the extrahepatic segments of the portal vein, hepatic artery, and bile ducts. Injury to the portal triad is uncommon but is one of the most difficult to manage traumatic injuries associated with high morbidity and mortality.
Is lesser sac retroperitoneal?
There are two main regions of the peritoneum connected by the epiploic foramen: the greater sac or general cavity of the abdomen, and the lesser sac or omental bursa. Retroperitoneal structures tend to be more static than intraperitoneal ones.
How do you get to lesser sac?
During minimally invasive upper GI surgery, the omental bursa can be approached in three ways:
- ϖ By opening the hepatogastric ligament (pars flaccida of the lesser omentum);
- ϖ Through the gastrocolic and gastrosplenic ligament, and;
- ϖ By opening the transverse mesocolon at the level of the pancreas.
What are greater and lesser omentum?
Omenta are the fused peritoneal folds that connect the stomach and duodenum with other abdominal organs. The greater omentum attaches the stomach to the transverse colon. The lesser omentum attaches the stomach and the duodenum to the liver.
Is lesser omentum the same as lesser sac?
The lesser sac, also known as the omental bursa, is the cavity in the abdomen that is formed by the lesser and greater omentum. Usually found in mammals, it is connected with the greater sac via the omental foramen or Foramen of Winslow….
| Lesser sac | |
|---|---|
| TA2 | 3703 |
| FMA | 19800 |
| Anatomical terminology |
What is caudate and quadrate lobe?
The caudate lobe lies between the fissure for the ligamentum venosum and the fossa for the inferior vena cava. The quadrate lobe is partly covered by the gallbladder in normal patients; anatomically, it lies between the fissure for the ligamentum teres and the gallbladder fossa.
How do you remember the portal triad?
Mnemonic
- D: ducts (right and left hepatic duct branches)
- A: arteries (right and left hepatic artery branches)
- V: vein (portal vein)
- E: epiploic foramen (of Winslow)
Where is the epiploic foramen located?
Epiploic foramen/Foramen of Winslow: Is the communication between the greater and lesser sac. Is located at the level of the T12 vertebra.
Can a herniated loop of intestine be reduced through epiploic foramen?
A loop of intestine may herniate through the epiploic foramen into the lesser sac. If the herniated loop is strangulated, the reduction is not possible through epiploic foramen as none of its boundaries can be incised due to important relations. Anteriorly in the free margin of lesser omentum are hepatic artery, portal vein and bile duct.
What causes epiploic foramen entrapment in foals?
Older horses are thought to be more prone to developing epiploic foramen entrapment and it has been hypothesised that this may be due enlargement of the epiploic foramen following age-related atrophy of the right liver lobe. However, the disease has also been reported in foals.
What is an epiploic hernia in horses?
This form of obstruction accounts for between 2% and 8% of horses undergoing exploratory laparotomy for colic and is one of the most common forms of internal hernia in the horse. The epiploic foramen is located in the right dorsal abdomen and is bordered by the vena cava, hepatic portal vein, liver and pancreas.