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Annular Pancreas
Siva P. Raman, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Definitions

              • Congenital anomaly resulting in pancreatic tissue partially or completely encircling descending portion of duodenum

            IMAGING

            • General Features

              • Radiographic Findings

                • CT Findings

                  • MR Findings

                    • Angiographic Findings

                      • Imaging Recommendations

                        DIFFERENTIAL DIAGNOSIS

                          PATHOLOGY

                          • General Features

                            • Microscopic Features

                              CLINICAL ISSUES

                              • Presentation

                                • Demographics

                                  • Natural History & Prognosis

                                    • Treatment

                                      DIAGNOSTIC CHECKLIST

                                      • Consider

                                        • Image Interpretation Pearls

                                          Selected References

                                          1. Türkvatan A et al: Congenital variants and anomalies of the pancreas and pancreatic duct: imaging by magnetic resonance cholangiopancreaticography and multidetector computed tomography. Korean J Radiol. 14(6):905-13, 2013
                                          2. Jarry J et al: Annular pancreas: a rare cause of acute pancreatitis. JOP. 12(2):155-7, 2011
                                          3. Lee NK et al: Complications of congenital and developmental abnormalities of the gastrointestinal tract in adolescents and adults: evaluation with multimodality imaging. Radiographics. 30(6):1489-507, 2010
                                          4. Sandrasegaran K et al: Annular pancreas in adults. AJR Am J Roentgenol. 193(2):455-60, 2009
                                          5. Mortelé KJ et al: Multimodality imaging of pancreatic and biliary congenital anomalies. Radiographics. 26(3):715-31, 2006
                                          6. Yamaguchi Y et al: Annular pancreas complicated by carcinoma of the bile duct: diagnosis by MR cholangiopancreatography and endoscopic ultrasonography. Abdom Imaging. 28(3):381-3, 2003
                                          7. Benya EC: Pancreas and biliary system: imaging of developmental anomalies and diseases unique to children. Radiol Clin North Am. 40(6):1355-62, 2002
                                          8. McCollum MO et al: Annular pancreas and duodenal stenosis. J Pediatr Surg. 37(12):1776-7, 2002
                                          9. Shan YS et al: Annular pancreas with obstructive jaundice: beware of underlying neoplasm. Pancreas. 25(3):314-6, 2002
                                          10. Jayaraman MV et al: CT of the duodenum: an overlooked segment gets its due. Radiographics. 21 Spec No:S147-60, 2001
                                          11. Kamisawa T et al: A new embryologic hypothesis of annular pancreas. Hepatogastroenterology. 48(37):277-8, 2001
                                          12. Berrocal T et al: Congenital anomalies of the upper gastrointestinal tract. Radiographics. 19(4):855-72, 1999
                                          13. Fulcher AS et al: MR pancreatography: a useful tool for evaluating pancreatic disorders. Radiographics. 19(1):5-24; discussion 41-4; quiz 148-9, 1999
                                          14. Jadvar H et al: Annular pancreas in adults: imaging features in seven patients. Abdom Imaging. 24(2):174-7, 1999
                                          15. Weiss H et al: Ultrasonography of fetal annular pancreas. Obstet Gynecol. 94(5 Pt 2):852, 1999
                                          16. Lecesne R et al: MR cholangiopancreatography of annular pancreas. J Comput Assist Tomogr. 22(1):85-6, 1998
                                          Related Anatomy
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                                          Related Differential Diagnoses
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                                          References
                                          Tables

                                          Tables

                                          KEY FACTS

                                          • Terminology

                                            • Imaging

                                              • Top Differential Diagnoses

                                                • Pathology

                                                  • Clinical Issues

                                                    TERMINOLOGY

                                                    • Definitions

                                                      • Congenital anomaly resulting in pancreatic tissue partially or completely encircling descending portion of duodenum

                                                    IMAGING

                                                    • General Features

                                                      • Radiographic Findings

                                                        • CT Findings

                                                          • MR Findings

                                                            • Angiographic Findings

                                                              • Imaging Recommendations

                                                                DIFFERENTIAL DIAGNOSIS

                                                                  PATHOLOGY

                                                                  • General Features

                                                                    • Microscopic Features

                                                                      CLINICAL ISSUES

                                                                      • Presentation

                                                                        • Demographics

                                                                          • Natural History & Prognosis

                                                                            • Treatment

                                                                              DIAGNOSTIC CHECKLIST

                                                                              • Consider

                                                                                • Image Interpretation Pearls

                                                                                  Selected References

                                                                                  1. Türkvatan A et al: Congenital variants and anomalies of the pancreas and pancreatic duct: imaging by magnetic resonance cholangiopancreaticography and multidetector computed tomography. Korean J Radiol. 14(6):905-13, 2013
                                                                                  2. Jarry J et al: Annular pancreas: a rare cause of acute pancreatitis. JOP. 12(2):155-7, 2011
                                                                                  3. Lee NK et al: Complications of congenital and developmental abnormalities of the gastrointestinal tract in adolescents and adults: evaluation with multimodality imaging. Radiographics. 30(6):1489-507, 2010
                                                                                  4. Sandrasegaran K et al: Annular pancreas in adults. AJR Am J Roentgenol. 193(2):455-60, 2009
                                                                                  5. Mortelé KJ et al: Multimodality imaging of pancreatic and biliary congenital anomalies. Radiographics. 26(3):715-31, 2006
                                                                                  6. Yamaguchi Y et al: Annular pancreas complicated by carcinoma of the bile duct: diagnosis by MR cholangiopancreatography and endoscopic ultrasonography. Abdom Imaging. 28(3):381-3, 2003
                                                                                  7. Benya EC: Pancreas and biliary system: imaging of developmental anomalies and diseases unique to children. Radiol Clin North Am. 40(6):1355-62, 2002
                                                                                  8. McCollum MO et al: Annular pancreas and duodenal stenosis. J Pediatr Surg. 37(12):1776-7, 2002
                                                                                  9. Shan YS et al: Annular pancreas with obstructive jaundice: beware of underlying neoplasm. Pancreas. 25(3):314-6, 2002
                                                                                  10. Jayaraman MV et al: CT of the duodenum: an overlooked segment gets its due. Radiographics. 21 Spec No:S147-60, 2001
                                                                                  11. Kamisawa T et al: A new embryologic hypothesis of annular pancreas. Hepatogastroenterology. 48(37):277-8, 2001
                                                                                  12. Berrocal T et al: Congenital anomalies of the upper gastrointestinal tract. Radiographics. 19(4):855-72, 1999
                                                                                  13. Fulcher AS et al: MR pancreatography: a useful tool for evaluating pancreatic disorders. Radiographics. 19(1):5-24; discussion 41-4; quiz 148-9, 1999
                                                                                  14. Jadvar H et al: Annular pancreas in adults: imaging features in seven patients. Abdom Imaging. 24(2):174-7, 1999
                                                                                  15. Weiss H et al: Ultrasonography of fetal annular pancreas. Obstet Gynecol. 94(5 Pt 2):852, 1999
                                                                                  16. Lecesne R et al: MR cholangiopancreatography of annular pancreas. J Comput Assist Tomogr. 22(1):85-6, 1998