A herniation or abnormal pouch-like projection of the esophageal wall, where part of the tissue protrudes outward.
From Greek 'esophagos' (esophagus) plus '-cele' (hernia or swelling), a medical term used to describe protruding or herniated tissue.
An esophagocele is related to diverticula (pouches in the esophagus), but 'esophagocele' specifically implies a herniation through the wall—a more serious condition.
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