Bird beak sign (oesophagus)

A.Prof Frank Gaillard et al.

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)

 

Inspired signs
Share article

Article information

rID: 5996
Section: Signs
Tag: refs
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Figure 1: photograph - bird beak
    Drag here to reorder.
  • Drag
    Achalasia
    Case 1: achalasia
    Drag here to reorder.
  • Drag
    Case 2: cardiac achalasia
    Drag here to reorder.
  • Drag
    Case 3
    Drag here to reorder.
  • Drag
     Case 4
    Drag here to reorder.
  • Drag
    Case 5
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.