title: Primary antral duodenal extramedullary plasmacytoma presenting with melena.
authors.affiliation: Department of Gastroenterology, Washington University School of Medicine, St. Louis, Missouri, USA.
authors.forename: Tarek
authors.initials: T
authors.lastname: Ammar
authors.forename: Friederike
authors.initials: F
authors.lastname: Kreisel
authors.forename: Matthew A
authors.initials: MA
authors.lastname: Ciorba
mesh_terms: D000368:Aged; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D004386:Duodenum / Q000473:pathology; D016099:Endoscopy, Gastrointestinal; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D008551:Melena / Q000209:etiology*; D010954:Plasmacytoma / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery; D011706:Pyloric Antrum / Q000473:pathology; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery