Modality: X-ray (Frontal)

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

Used in the following article:

  • Achalasia - “ Achalasia (primary achalasia) is a failure of organised oesophageal peristalsis causing impaired relaxation of the lower oesophageal sphincter, an...”
  • Pseudoachalasia - “ Pseudoachalasia is achalasia-pattern dilatation of the oesophagus due to the narrowing of the distal oesophagus from causes other than primary den...”

View full size version of Achalasia and tertiary waves

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