title: Achalasia and the rat's tail sign.
authors.affiliation: Department of Internal Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan and Department of Internal Medicine, Chu Shang Show Chwan Hospital, Nantou, Taiwan. email: chestshen@gmail.com.
authors.forename: Wen-Chien
authors.initials: WC
authors.lastname: Cheng
authors.affiliation: Department of Internal Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan and Department of Internal Medicine, Chu Shang Show Chwan Hospital, Nantou, Taiwan. email: chestshen@gmail.com.
authors.forename: Te-Chun
authors.initials: TC
authors.lastname: Shen
authors.affiliation: Department of Internal Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan and Department of Internal Medicine, Chu Shang Show Chwan Hospital, Nantou, Taiwan. email: chestshen@gmail.com.
authors.forename: Chih-Yen
authors.initials: CY
authors.lastname: Tu
mesh_terms: D000293:Adolescent; D001466:Barium Sulfate; D003287:Contrast Media; D003680:Deglutition Disorders / Q000209:etiology; D004931:Esophageal Achalasia / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate