Upper esophageal diverticulum
Chronic bad breath and dysphagia.
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There is a pouch arising from the midline of the posterior wall of the proximal esophagus, further below the pharyngoesophageal junction.
This case illustrates a proximal esophageal diverticulum that has arises further below the level of the pharyngoesophageal junction and, therefore, is not a Zenker diverticulum. For having a posterior origin, it also appears to not fit as a Killian-Jamieson diverticulum, which arises below the cricopharyngeal muscle anteriorly and laterally.