title: A 56-year-old man with hematemesis.
authors.affiliation: Baylor College of Medicine, Houston, Texas, USA.
authors.forename: Miles
authors.initials: M
authors.lastname: Medrano
mesh_terms: D000236:Adenoma / Q000175:diagnosis*; D002011:Brunner Glands / Q000473:pathology*; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000175:diagnosis*; D006396:Hematemesis / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged