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A circumscribed sacculation of the oesophageal wall. These can be divided into congenital or acquired. Congenital diverticula are due to a herniation of the mucosa through a muscularis defect. Acquired diverticula can be subdivided into:
A circumscribed sacculation of the oesophageal wall. These can be divided into congenital or acquired. Congenital diverticula are due to a herniation of the mucosa through a muscularis defect. Acquired diverticula can be subdivided into:
#'''Traction forms''' result from peri-oesophageal inflammation and fibrosis and develop mainly in the cranial and mid-oesophageal body. Sacculations are created by adhesions to adjacent tissues.
#'''Traction forms''' result from peri-oesophageal inflammation and fibrosis and develop mainly in the cranial and mid-oesophageal body. Sacculations are created by adhesions to adjacent tissues.
#'''Pulsion forms'''
#'''Pulsion forms''' result from:
*an increase in intraluminal oesophageal pressure
*abnormal local oesophageal motiltiy
*a stenosis interupting normal peristalsis
==Diagnosis==
==Diagnosis==
===Clinical Signs===
===Clinical Signs===