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What is All of the following statements about Zenker&;s diveiculum are true Except and explain in detail?
It is a protrusion of mucosa through Killian's dehiscence, a weak area of posterior pharyngeal wall between thyropharyngeus (oblique fibres) and cricopharyngeus(transverse fibres) of the inferior constrictor muscle of pharynx. Barium swallow-lateral view shows pharyngeal pouch. It is a false diveiculum because it contains only mucosa and submucosa. True diveiculum contains all 4 layers. It is usually an Acquired condition. Reference: SRB's Manual of Surgery, 6th Edition, page no=421.