Schatzki ring
A Shatzki ring is a thickening of the oesophageal mucosa that can obstruct swallowing.
It is probably formed by the body as an attempt to reduce reflux.Â
This 2017 paper, Esophageal complications of gastroesophageal reflux disease: consequences or defensive reactions? suggests "motility disorders (hypertensive lower esophageal sphincter, achalasia, cricopharyngeal achalasia) and structural changes (Schatzki's ring, esophageal stricture, subglottic trachea stenosis), which develop as a complication of reflux may help to prevent aspiration that can cause new complaints and may lead to further complications."
Although a Schatzki ring will cause swallowing difficulties, it is benign and usually easily treated by dilation.
This video to train endscopist nurses, is very clear and provides more information about the condition.
More information may be found in Stat Pearls, "Schatzki ring is a benign stricture and when symptomatic can be effectively treated. The patient often does well, and symptoms improve after treatment. Recurrence does occur with rates up to 64% in the first 2 years, hence requiring repeat dilation."
Page updated 21 March 2023