Abeer Fatima11 months ago

Bird Beak Sign in Achalasia

Achalasia refers to the abnormal opening of the esophageal sphincter resulting in dilation of esophagus proximal to the obstruction. On barium swallow, a characteristic bird beak sign is present indicating achalasia. Reference: http://www.svuhradiology.ie/case-study/achalasia-barium-swallow/