lesser omentum


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Related to lesser omentum: Lesser sac

omentum

 [o-men´tum] (L.)
a fold of peritoneum extending from the stomach to adjacent abdominal organs. adj., adj omen´tal.
gastrocolic omentum greater omentum.
gastrohepatic omentum lesser omentum.
greater omentum a peritoneal fold attached to the anterior surface of the transverse colon.
lesser omentum a peritoneal fold joining the lesser curvature of the stomach and the first part of the duodenum to the porta hepatis.
omentum ma´jus greater omentum.
omentum mi´nus lesser omentum.

less·er o·men·tum

[TA]
a thin, double-layer peritoneal fold formed by the ventral mesentery of the stomach (ventral mesogastrium) passing from the lesser curvature of the stomach and upper border to the proximal duodenum (2 cm distal to the pylorus) to the liver (margins of the porta hepatis and into the depth of the fissure of the ductus venosus); major subcomponents include the hepatogastric ligament (main sheetlike portion) and the hepatoduodenal ligament (thickened free right border, which encloses the hepatic artery, portal vein, and common bile duct.

lesser omentum

n.
A fold of the peritoneum joining parts of the stomach and duodenum to the liver.

less·er o·men·tum

(les'ĕr ō-men'tŭm) [TA]
A peritoneal fold passing from the margins of the porta hepatis and the bottom of the fissure of the ductus venosus to the lesser curvature of the stomach and to the upper border of the duodenum for a distance of about 2 cm beyond the gastroduodenal pylorus.
References in periodicals archive ?
Omental torsion, especially that of the lesser omentum, is extremely rare; however, it should be considered in differential diagnosis of acute abdomen because it can cause acute surgical abdomen.
Intraperitoneal fat focal infarction of the lesser omentum: Case report.
(9) He described "Pringle's Manoeuvre." The vessels in the free border of the lesser omentum may be controlled by compression between the thumb and index finger of the left hand.
Later with the growth of the liver into the mesenchyme of the septum transversum, the ventral mesentery divides into; the lesser omentum, that extends from the lower portion of the oesophagus, stomach and upper portion of the duodenum to the liver; the falciform ligament extending from the liver to the ventral body wall (Moore and Persaud, 2003).
The duodenum was kocherised and reduced through the lesser omentum where constriction was felt and released by incising few cms along the lesser curve.
The accessory right hepatic artery originated from the superior mesenteric artery, ascended in the free border of lesser omentum behind portal vein and bile duct.
Gall bladder has a great propensity to invade liver directly and to a lesser extend the stomach and duodenum; it also metastasizes frequently to liver, cystic and pericholedochal lymph nodes in the lesser omentum and lymph nodes behind the first portion of the duodenum.
The common hepatic artery was 7mm in calibre and was running upwards to the right margin of lesser omentum behind the neck of the pancreas and anterior to the portal vein and terminated into right and left hepatic arteries.