In the abdomen, some drain to the left gastric vein.

Most commonly, extrahepatic shunts are found connecting the portal vein or left gastric vein to the caudal vena cava.

Esophageal and paraesophageal varices are supplied primarily by the left gastric vein (due to flow reversal) and typically drain into the azygos/hemiazygos venous system.

Barsoum et al reported a post mortem finding after sclerotherapy of portal veing thrombus extending into the left gastric vein and the submucosal plexus of the oesophagus.

The remaining blood from the esophagus is drained into the superficial veins lining the esophageal mucosa, which drain into the left gastric vein (coronary vein), which in turn drains directly into the portal vein.