epiphrenic diverticulum

ep·i·phren·ic di·ver·tic·u·lum

a diverticulum which originates just above the cardioesophageal junction and usually protrudes to the right side of the lower mediastinum.
References in periodicals archive ?
Abnormalities included altered peristalsis (20 patients), luminal narrowing (3), reflux alone (2), and a grapefruit-sized epiphrenic diverticulum (1).