paraesophageal
adjective
para·esoph·a·ge·al
variants:
or British para-oesophageal \ -i-ˌsäf-ə-ˈjē-əl 
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Medical Definition of paraesophageal
: adjacent to the esophagus
especially
: relating to or being a hiatal hernia in which the connection between the esophagus and the stomach remains in its normal location but part or all of the stomach herniates through the hiatus into the thorax