title: An unusual case of gastrointestinal bleeding.
abstract: A 10-year-old boy presented with a 3-day history of worsening abdominal pain, fever, emesis and melena. Abdominal ultrasound revealed a right upper quadrant mass that was confirmed by computed tomography angiogram (CTA), which showed an 8 cm well-defined retroperitoneal vascular mass. (123)Iodine metaiodobenzylguanidine ((123)MIBG) scan indicated uptake only in the abdominal mass. Subsequent biopsy revealed a paraganglioma that was treated with chemotherapy. This case represents an unusual presentation of a paraganglioma associated with gastrointestinal (GI) bleeding and highlights the utility of CTA and (123)MIBG in evaluation and treatment.
authors.affiliation: Division of Gastroenterology, Hepatology and Nutrition, The Children's Hospital of Philadelphia, Perelman, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: Kristin N
authors.initials: KN
authors.lastname: Fiorino
authors.forename: Brian
authors.initials: B
authors.lastname: Lestini
authors.forename: Kim E
authors.initials: KE
authors.lastname: Nichols
authors.forename: Sudha A
authors.initials: SA
authors.lastname: Anupindi
authors.forename: Asim
authors.initials: A
authors.lastname: Maqbool