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Bird beak sign (oesophagus)

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The bird's beak sign of the oesophagus is used to refer to the tapering of the inferior oesophagus in achalasia. The same appearance (although it is difficult to see the similarity) is also referred to as the rat-tail sign.

The appearance, although classically occurring in primary achalasia, can also occur in pseudoachalasia due to a gastric tumour involving the gastro-oesophageal junction.

Terminology

The term bird's beak sign is used in a number of other contexts: see bird beak sign (disambiguation).

-<p>The <strong>bird's beak sign of the oesophagus</strong> is used to refer to the tapering of the inferior oesophagus in <a href="/articles/achalasia">achalasia</a>. The same appearance (although it is difficult to see the similarity) is also referred to as the <a href="/articles/rat-tail-sign-oesophagus">rat-tail sign</a>.</p><p>The appearance, although classically occurring in primary achalasia, can also occur in <a href="/articles/pseudoachalasia">pseudoachalasia</a> due to a gastric tumour involving the gastro-oesophageal junction.</p><h4>Terminology</h4><p>The term bird's beak sign is used in a number of other contexts: see <a href="/articles/bird-beak-sign-disambiguation">bird beak sign (disambiguation)</a>. </p><p> </p>
+<p>The <strong>bird's beak sign of the oesophagus</strong> is used to refer to the tapering of the inferior oesophagus in <a href="/articles/achalasia">achalasia</a>. The same appearance (although it is difficult to see the similarity) is also referred to as the <a href="/articles/rat-tail-sign-oesophagus">rat-tail sign</a>.</p><p>The appearance, although classically occurring in primary achalasia, can also occur in <a href="/articles/pseudoachalasia">pseudoachalasia</a> due to a gastric tumour involving the gastro-oesophageal junction.</p><h4>Terminology</h4><p>The term bird's beak sign is used in a number of other contexts: see <a href="/articles/bird-beak-sign-disambiguation">bird beak sign (disambiguation)</a>. </p>

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Bird beak sign (oesophagus)

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