Obstruction of the esophagus by diseased ectopic gastric mucosa.
D004194:Disease; D004935:Esophageal Diseases; D004947:Esophagus; D005753:Gastric Mucosa; D006801:Humans; D009092:Mucous Membrane; D013270:Stomach
ESOPHAGUS/diseases; MUCOUS MEMBRANES; STOMACH