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· 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 |
