Barium
Frontal view
Lateral view
Lateral view
Oblique view
The barium swallow shows a posterior pharyngeal pouch arising from the midline of the posterior wall of the distal pharynx at C6 level in keeping with a Zenker diverticulum.
The gastro-oesophagal junction was evaluated (not shown) with no hiatal hernia or gastro-oesophageal reflux seen.