title: A rare case of Burkitt's lymphoma of the duodenal bulb.
abstract: Gastrointestinal tract involvement in immunodeficiency-related Burkitt's lymphoma is not common and the duodenal involvement is very rare. We report the case of a 35-year-old man admitted because of abdominal pain, vomiting and weight loss. Human immunodeficiency virus infection was diagnosed and upper digestive tract endoscopy showed marked edema and hyperemia of the duodenal bulb with some violaceous areas. Immunohistochemical study of the bulbar tissue samples confirmed the diagnosis of Burkitt's lymphoma. To our knowledge, duodenal Burkitt's lymphoma affecting only the bulb has not been previously reported in the medical literature. In patients with human immunodeficiency virus infection who present with upper gastrointestinal symptoms, upper endoscopy may be diagnostic of malignancy and biopsies should be obtained from abnormal areas.
authors.affiliation: Department of Gastroenterology and Hepatology (Joana Rita Carvalho, Luís Carrilho-Ribeiro, José Velosa), Portugal.
authors.forename: Joana Rita
authors.initials: JR
authors.lastname: Carvalho
authors.affiliation: Department of Gastroenterology and Hepatology (Joana Rita Carvalho, Luís Carrilho-Ribeiro, José Velosa), Portugal.
authors.forename: Luís
authors.initials: L
authors.lastname: Carrilho-Ribeiro
authors.affiliation: Infectology (Alexandra Zagalo, Fábio Cota Medeiros), Portugal.
authors.forename: Alexandra
authors.initials: A
authors.lastname: Zagalo
authors.affiliation: Infectology (Alexandra Zagalo, Fábio Cota Medeiros), Portugal.
authors.forename: Fábio Cota
authors.initials: FC
authors.lastname: Medeiros
authors.affiliation: Pathology (Cristina Ferreira), North Lisbon Hospital Center, Portugal.
authors.forename: Cristina
authors.initials: C
authors.lastname: Ferreira
authors.affiliation: Department of Gastroenterology and Hepatology (Joana Rita Carvalho, Luís Carrilho-Ribeiro, José Velosa), Portugal.
authors.forename: José
authors.initials: J
authors.lastname: Velosa
keywords: Burkitt’s lymphoma; duodenal bulb; human immunodeficiency virus; non-Hodgkin’s lymphoma