Left gastroepiploic artery

The left gastroepiploic artery (LGA) is one of the branches of the splenic artery.

Gross Anatomy

Course

The LGA runs within the two layers of the greater omentum to the right along the greater curvature of the stomach, approximately 1 cm from the gastric wall before it anastomoses with the right gastroepiploic artery.

Branches

The LGA gives off branches to the stomach, which comes off at right angles, in contrast to branches from vagal nerve trunks, which comes off obliquely.

Both left and right gastroepoploic arteries give off branches known as the epiploic branches that pass inferiorly between the two layers of the greater omentum. These branches pass over the transverse colon, but do not supply it.

Relations

Veins of the same name accompany the arteries.

Variant anatomy

Instead of anastomosing directly with the right gastroepiploic artery, the left and right gastroepiploic arteries may terminate by sinking directly into the gastric wall.

Variant origins of the LGA include 1:

  • splenic artery (72%)
  • inferior polar artery of the spleen (22%)
  • superior polar artery of the spleen (6%)
Abdominal and pelvic anatomy
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Article information

rID: 46357
Section: Anatomy
Tag: refs
Synonyms or Alternate Spellings:

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