title: The esophageal bird's beak sign.
authors.affiliation: Department of Radiology, Mayo Clinic Jacksonville, 4500 San Pablo Road S, Jacksonville, FL, 32224, USA. Amiraian.Dana@mayo.edu.
authors.forename: Dana E
authors.initials: DE
authors.lastname: Amiraian
authors.affiliation: Department of Radiology, Mayo Clinic Jacksonville, 4500 San Pablo Road S, Jacksonville, FL, 32224, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: DiSantis
mesh_terms: D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging*; D005471:Fluoroscopy; D006801:Humans