the area bounded superiorly by the lowest cricopharyngeal fibers and inferiorly by the upper circular fibers of the esophagus through which course the inferior laryngeal nerve, the inferior laryngeal artery, and laryngeal lymphatics. A lateral pharyngoesophageal diverticulum may protrude through this area.
See Also: pharyngoesophageal diverticulum
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Examples: glitazone, GI cocktail, etc.