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==Description==
==Description==
An oesophageal stricture is an abnormal circumferential narrowing of the lumen secondary to severe oesophagitis. A deep wall injury results followed by healing by fibrosis. The most important causes are:
An oesophageal stricture is an abnormal circumferential narrowing of the lumen secondary to severe [[Oesophagitis - WikiClinical|oesophagitis]]. A deep wall injury results followed by healing by fibrosis. The most important causes are:
*Chemical injury from swallowed substances
*Chemical injury from swallowed substances
*Gastro-oesophageal reflux
*Gastro-oesophageal reflux