Modality: X-ray (Frontal)

- “ A barium swallow is able to confirm that: bird beak sign esophageal dilatation pooling or stasis of barium in the esophagus when the esophagus ...”

Used in the following article:

  • Achalasia - “ Achalasia (primary achalasia) is a failure of organized esophageal peristalsis causing impaired relaxation of the lower esophageal sphincter, and ...”
  • Pseudoachalasia - “ Pseudoachalasia is achalasia-pattern dilatation of the esophagus due to the narrowing of the distal esophagus from causes other than primary dener...”

View full size version of Achalasia and tertiary waves

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