title: A retroperitoneal neuroendocrine tumor in ectopic pancreatic tissue.
abstract: Ectopic pancreas is the relatively uncommon presence of pancreatic tissue outside the normal location of the pancreas. We report a case of abdominal pain due to retroperitoneal neuroendocrine tumor arising from heterotopic pancreatic tissue between the duodenal wall and the head of the pancreas. Patient underwent surgical enucleation of the tumor.
authors.affiliation: Internal Medicine Gastroenterology and Hepatology, Cairo, Egypt.
authors.forename: Hussein Hassan
authors.initials: HH
authors.lastname: Okasha
authors.affiliation: Department of Surgery, Cairo University, Cairo, Egypt.
authors.forename: Fahim
authors.initials: F
authors.lastname: Al-Bassiouni
authors.affiliation: Department of Surgery, National Cancer Institute, Cairo, Egypt.
authors.forename: Monir Abo
authors.initials: MA
authors.lastname: El-Ela
authors.affiliation: Department of Cytopathology Unit, National Cancer Institute, Cairo, Egypt.
authors.forename: Emad Hamza
authors.initials: EH
authors.lastname: Al-Gemeie
authors.affiliation: Department of Gastroenterology, Assiut University, Cairo, Egypt.
authors.forename: Reem
authors.initials: R
authors.lastname: Ezzat
keywords: ectopic pancreas; endoscopic ultrasonography; neuroendocrine tumor; retroperitoneal tumor