Dilation of the esophagus in a patient with achalasia (barium esophagram)

Barium esophagram in a 62-year-old man demonstrates a dilated, barium-filled esophagus with a region of persistent narrowing (arrow) at the gastroesophageal junction, producing the so-called bird's beak appearance. Achalasia was confirmed with manometry and the patient underwent successful dilation of the esophagus.