Esophageal Diverticula

Zenker’s Diverticulum

Midesophageal Diverticulum

Epiphrenic Diverticulum

·        Pharyngoesophageal diverticulum

·        Occurs in older women

·        Posteriorly at site of Killian's dehiscence = superior boundary is thyropharyngeal muscle and inferior boundary is cricopharyngeal muscle

·        Pulsion diverticulum

·        False diverticulum = herniation of mucosa and submucosa through muscular layer

·       May be formed in response to pull from fibrous adhesions following lymph node infection (usually TB)

·        True diverticulum  = contains all 3 esophageal layers

·        Or, may form from increased intraluminal pressure and be pulsion diverticula

·        Location is usually in distal esophagus on lateral esophageal wall, right > left

·        Often associated with hiatal hernia

·        Pulsion diverticulum

·        False diverticulum