Left gastric artery

The left gastric artery (Latin: arteria gastrica sinistra) is the smallest branch of the coeliac trunk. Its branches mainly supply the stomach, but some branches also reach the lower esophagus.

The artery ascends to the gastro-esophageal junction and gives off esophageal branches that travel upward to reach the abdominal part of the esophagus. Some of these branches continue through the hiatus of the diaphragm and anastomose with the esophageal branches of the thoracic aorta.

The left gastric artery itself turns to the right and descends along the lesser curvature of the stomach within the lesser omentum. It supplies both surfaces of the stomach in this area with its stomach branches and also anastomoses with the right gastric artery.