title: MRI Findings of Intrinsic and Extrinsic Duodenal Abnormalities and Variations.
abstract: This pictorial review aims to illustrate the magnetic resonance imaging (MRI) findings and presentation patterns of anatomical variations and various benign and malignant pathologies of the duodenum, including sphincter contraction, major papilla variation, prominent papilla, diverticulum, annular pancreas, duplication cysts, choledochocele, duodenal wall thickening secondary to acute pancreatitis, postbulbar stenosis, celiac disease, fistula, choledochoduodenostomy, external compression, polyps, Peutz-Jeghers syndrome, ampullary carcinoma and adenocarcinoma. MRI is a useful imaging tool for demonstrating duodenal pathology and its anatomic relationships with adjacent organs, which is critical for establishing correct diagnosis and planning appropriate treatment, especially for surgery.
authors.affiliation: Department of Radiology, Ankara University School of Medicine, Ankara 06100, Turkey.
authors.forename: Ebru
authors.initials: E
authors.lastname: Dusunceli Atman
authors.affiliation: Department of Radiology, Ankara University School of Medicine, Ankara 06100, Turkey.
authors.forename: Ayse
authors.initials: A
authors.lastname: Erden
authors.affiliation: Department of Radiology, Ankara University School of Medicine, Ankara 06100, Turkey.
authors.forename: Evren
authors.initials: E
authors.lastname: Ustuner
authors.affiliation: Department of Radiology, Ankara University School of Medicine, Ankara 06100, Turkey.
authors.forename: Caglar
authors.initials: C
authors.lastname: Uzun
authors.affiliation: Department of Gastroenterology, Ankara University School of Medicine, Ankara 06100, Turkey.
authors.forename: Mehmet
authors.initials: M
authors.lastname: Bektas
mesh_terms: D014670:Ampulla of Vater / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D015529:Choledochal Cyst / Q000000981:diagnostic imaging / Q000473:pathology; D004240:Diverticulum / Q000000981:diagnostic imaging; D004378:Duodenal Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D004386:Duodenum / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D010179:Pancreas / Q000002:abnormalities / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D010182:Pancreatic Diseases / Q000000981:diagnostic imaging; D011859:Radiography
keywords: Duodenum; MR imaging