title: "Flap valve" dysphagia in esophageal carcinoma.
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000150:complications* / Q000175:diagnosis; D003680:Deglutition Disorders / Q000209:etiology*; D004938:Esophageal Neoplasms / Q000150:complications* / Q000175:diagnosis; D004945:Esophagoscopy; D006801:Humans; D008297:Male