title: 90-year-old man with fever and melena.
authors.affiliation: Mayo Graduate School of Medicine, Mayo Clinic Rochester, MN 55905, USA.
authors.forename: A
authors.initials: A
authors.lastname: Vella
authors.forename: G
authors.initials: G
authors.lastname: Farrugia
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003937:Diagnosis, Differential; D005334:Fever / Q000209:etiology*; D006801:Humans; D016393:Lymphoma, B-Cell / Q000150:complications / Q000175:diagnosis*; D008228:Lymphoma, Non-Hodgkin / Q000150:complications / Q000175:diagnosis*; D008297:Male; D008551:Melena / Q000209:etiology*; D013274:Stomach Neoplasms / Q000150:complications / Q000175:diagnosis*