retroesophageal

ret·ro·e·soph·a·ge·al

(ret'rō-ē'sō-faj'ē-ăl), Posterior to the esophagus.

retroesophageal

(rĕt″rō-ē-sŏf″ă-jē′ăl) [L. retro, behind, + Gr. oisophagos, gullet] Behind the esophagus.