<prompt> All of the following statements about Zenker;s diveiculum are true ExceptAcquired diveiculumLateral X-rays on Barium swallow are often diagnosticFalse diveiculumOut pouching of the anterior pharyngeal wall, just above the cricopharyngeus muscle  <response>: It is a protrusion of mucosa through Killians dehiscence, a weak area of posterior pharyngeal wall between thyropharyngeus oblique fibres and cricopharyngeustransverse 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: SRBs Manual of Surgery, 6th Edition, page no421. 