"It crosses to the left of midline at the thoracic plane (range T4-T6 vertebral body) and continues superiorly through the thoracic inlet, posterior to the left subclavian artery. At the root of the neck, it arches forward and to the left, behind the left carotid sheath 7, before crossing over the dome of the left pleura and left subclavian artery, passing anterior to the anterior scalene muscle and phrenic nerve to drain into the angle of the left subclavian and internal jugular veins as a single trunk 1-4."
Expected headings
"Relations"
"Tributaries"
"ascending lumbar, intestinal, liver and descending intercostal lymph trunks"