From T4/5 to T10.
The esophagus runs downwards to the right then to the left of the aorta. It is the continuation of the cervical and superior mediastinal part.
| Superior mediastinum
It is related anteriorly to the heart and pericardium and can be dented in enlargement of the right atrium. Its normal constrictions are at the pharyngo-esophageal junction where it is crossed by the left principle bronchus and where it goes through the thoracic diaphragm at T10, are clinically important. The vagal plexus surrounds it, before reconstituting into anterior and posterior vagal trunks.
It is vascularized by a longitudinal anastomosis to which several vessels contribute. These include:
The veins drain both to the portal vein and azygous system. The esophagus therefore constitutes a site of portosystemic anastomosis.
Mediastinal lymph nodes
Vagal trunks and sympathetic from sympathetic chain