A<unk>  is an outpouching of the esophagus just below the upper esophageal sphincter. The physicians that first discovered the diverticulum were Gustav<unk>  and James<unk> . Diverticula are seldom larger than 1.5 cm, and are less frequent than the similar Zenker's diverticula. As opposed to a Zenker's, which is typically a posterior and inferior outpouching from the esophagus, a<unk>  is typically an anterolateral outpouching at the level of the C5-C6 vertebral bodies, due to a congenital weakness in the cervical esophagus just below the cricopharyngeal muscle. It is usually smaller in size than a Zenker's diverticulum, and typically asymptomatic. Although congenital, it is more commonly seen in elderly patients.
Killian–Jamieson diverticulum
Zenker's degeneration
Zenker's diverticulum
Hartnup disease
Rectal foreign body
Urachal diverticulum
Enteric duplication cyst
Trevor disease