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Left gastric artery

From Wikipedia, the free encyclopedia
Left gastric artery
The left gastric artery and other branches of the celiac artery (stomach in situ). Left gastric artery identified near lesser curvature.
Left gastric artery is at #2 -- the upper of the two arrows.
Details
SourceCeliac artery
Identifiers
Latinarteria gastrica sinistra
TA98A12.2.12.013
TA24212
FMA14768
Anatomical terminology

In human anatomy, the left gastric artery arises from the celiac artery and runs along[1] the superior portion of[citation needed] the lesser curvature of the stomach before anastomosing with the right gastric artery (which runs right to left[citation needed]). It also issues esophageal branches[1] that supply lower esophagus and ascend through the esophageal hiatus to form anastomoses with the esophageal branches of thoracic part of aorta.[citation needed]

Anatomy

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Origin

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The LGA usually arises from (the superior aspect of) the coeliac trunk - sometimes as a terminal branch of a trifurcation, and more rarely as a side branch of the splenic artery or of common hepatic artery.[2]

Course

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From the crus of diaphragm, the LGA arches obliquely anterior-ward and to the left to reach the left curvature of the stomach just inferior to the gastric cardia (thus erecting the gastropancreatic (peritoneal) fold).[2]

Fate

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Upon reaching the cardia, the LGA splits into two terminal branches - a ventral one and a dorsal one - which anastomose with corresponding terminal branches of the right gastric artery, together providing arterial supply to the lesser curvature of the stomach.[2]

Branches

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Besides its terminal ventral branch and dorsal branch, the LGA yields multiple side branches: the left lateral hepatic artery, posterior esophageal artery, anterior esophagocardiotuberous artery, branches to lymph nodes, and omental branches.[2]

Clinical significance

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In terms of disease, the left gastric artery may be involved in peptic ulcer disease: if an ulcer erodes through the stomach mucosa into a branch of the artery, this can cause massive blood loss into the stomach, which may result in such symptoms as hematemesis or melaena.

Additional images

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References

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  1. ^ a b Lung, Kirsten; Lui, Forshing (2022), "Anatomy, Abdomen and Pelvis, Arteries", StatPearls, Treasure Island (FL): StatPearls Publishing, PMID 30247834, retrieved 2023-01-14
  2. ^ a b c d "Artère gastrique gauche - Dictionnaire médical de l'Académie de Médecine". www.academie-medecine.fr. Retrieved 2024-05-09.
  3. ^ Essential Clinical Anatomy. K.L. Moore & A.M. Agur. Lippincott, 2 ed. 2002. Page 150
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