Achalasia and esophageal carcinoma.
D000328:Adult; D002277:Carcinoma / Q000209:etiology; D003680:Deglutition Disorders / Q000150:complications*; D004931:Esophageal Achalasia / Q000150:complications*; D004938:Esophageal Neoplasms / Q000175:diagnosis / Q000209:etiology*; D004945:Esophagoscopy; D006396:Hematemesis; D006801:Humans; D008297:Male; D008875:Middle Aged