A ring (esophagus)

Last revised by Dr Vikas Shah on 11 Nov 2020

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.

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Cases and figures

  • Figure 1
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  • Case 1: A and B rings, single contrast
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  • Case 1: A and; B rings, double contrast
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