B ring

Dr Henry Knipe and Dr Matt A. Morgan et al.

The B ring is a mucosal ring that develops in the distal esophagus at the gastroesophageal junction (Z line). 

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
Oesophageal pathology

Article information

rID: 78230
Synonyms or Alternate Spellings:

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Cases and figures

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