Left gastric artery | |
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![]() 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 | |
Source | Celiac artery |
Identifiers | |
Latin | arteria gastrica sinistra |
TA98 | A12.2.12.013 |
TA2 | 4212 |
FMA | 14768 |
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 ]
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. Sometimes it originates directly from aorta or from arteria phrenica inferior. [2]
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]
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]
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]
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.