Killian's dehiscence

Killian's dehiscence (also known as Killian's triangle) is a triangular area in the wall of the pharynx between the inferior constrictor muscle and the cricopharyngeus muscle. (Also see Pharyngeal pouch).

Clinical significance
It represents a potentially weak spot where a pharyngoesophageal diverticulum (Zenker's diverticulum) is more likely to occur.

Eponym
It is named after the German ENT surgeon Gustav Killian.