If the ring becomes symptomatic, then it is usually termed a Schatzki ring, although some use the terms synonymously.
Its development is thought to be a reaction to chronic irritation of the esophageal mucosa from gastro-esophageal reflux and it has squamous epithelium on its upper surface and columnar epithelium on its lower surface.
They are often associated with a hiatal hernia.
- short annular peptic stricture: these tend to make a broader impression on the distal esophagus than a B ring, which is usually <5 mm in thickness
- 1. SCHATZKI R. THE LOWER ESOPHAGEAL RING. LONG TERM FOLLOW-UP OF SYMPTOMATIC AND ASYMPTOMATIC RINGS. (1963) The American journal of roentgenology, radium therapy, and nuclear medicine. 90: 805-10. Pubmed
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