title: Primary esophageal lymphoma: a diagnostic challenge.
authors.forename: Keith J
authors.initials: KJ
authors.lastname: Kaplan
mesh_terms: D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D016483:Lymphoma, AIDS-Related / Q000175:diagnosis* / Q000209:etiology