Achalasia of the gastroesophageal segment: a review and case report of hematemesis and melena following a positive mecholyl test.
D004931:Esophageal Achalasia; D006396:Hematemesis; D006801:Humans; D008551:Melena; D016210:Methacholine Chloride; D008688:Methacholine Compounds
D008688:Methacholine Compounds; D016210:Methacholine Chloride
CARDIOSPASM; HEMATEMESIS; MELENA; METHACHOLINE COMPOUNDS