A-rings (esophagus)

A-rings are a type of distal esophageal ring. They are above the B-ring and occur a few centimeters proximal to the gastro-esophageal junction. They represent a physiological contraction of esophageal smooth muscle covered by mucosa. A-rings are uncommonly symptomatic.

Oesophageal pathology
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Article information

rID: 31336
Synonyms or Alternate Spellings:
  • A ring
  • Oesophageal A-rings
  • Esophageal A-rings
  • A-rings
  • A rings

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Cases and figures

  • Case 1
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  • Case 2: the A & B rings, single contrast
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  • Case 2: the A & B rings, double contrast
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