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Ultrasound
Diagnosis
Biliary System
Ductal Pathology
Biliary Ductal Dilatation
Biliary Ductal Dilatation
L. Nayeli Morimoto, MD; Aya Kamaya, MD, FSRU, FSAR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • CT Findings

                  • MR Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          CLINICAL ISSUES

                          • Presentation

                            Selected References

                            1. Atkinson CJ et al: Mild asymptomatic intrahepatic biliary dilation after cholecystectomy, a common incidental variant. Abdom Radiol (NY). 42(5):1408-14, 2017
                            2. McArthur TA et al: CT evaluation of common duct dilation after cholecystectomy and with advancing age. Abdom Imaging. 40(6):1581-6, 2015
                            3. Itoi T et al: Extrahepatic bile duct measurement by using transabdominal ultrasound in Japanese adults: multi-center prospective study. J Gastroenterol. 48(9):1045-50, 2013
                            4. McArthur TA et al: The common duct dilates after cholecystectomy and with advancing age: reality or myth? J Ultrasound Med. 32(8):1385-91, 2013
                            5. Lutz, H et al: Manual of Diagnostic Ultrasound. World Heath Organization, 2011
                            6. O'Connor OJ et al: Imaging of biliary tract disease. AJR Am J Roentgenol. 197(4):W551-8, 2011
                            7. Holm AN et al: What should be done with a dilated bile duct? Curr Gastroenterol Rep. 12(2):150-6, 2010
                            8. Horrow MM: Ultrasound of the extrahepatic bile duct: issues of size. Ultrasound Q. 26(2):67-74, 2010
                            9. Rubens DJ. Ultrasound imaging of the biliary tract. Ultrasound Clinics. 2(3):391-413, 2007
                            10. Gandolfi L et al: The role of ultrasound in biliary and pancreatic diseases. Eur J Ultrasound. 16(3):141-59, 2003
                            11. von Herbay A et al: Color doppler sonography avoids misinterpretation of the "parallel channel sign" in the sonographic diagnosis of cholestasis. J Clin Ultrasound. 27(8):426-32, 1999
                            12. Laing FC: The gallbladder and bile ducts. In Rumack CM et al: Diagnostic Ultrasound. Vol. 1. Mosby-Year Book. 75–223, 1998
                            13. Bressler EL et al: Sonographic parallel channel sign: a reappraisal. Radiology. 164(2):343-6, 1987
                            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

                                      IMAGING

                                      • General Features

                                        • Ultrasonographic Findings

                                          • CT Findings

                                            • MR Findings

                                              • Imaging Recommendations

                                                DIFFERENTIAL DIAGNOSIS

                                                  PATHOLOGY

                                                  • General Features

                                                    CLINICAL ISSUES

                                                    • Presentation

                                                      Selected References

                                                      1. Atkinson CJ et al: Mild asymptomatic intrahepatic biliary dilation after cholecystectomy, a common incidental variant. Abdom Radiol (NY). 42(5):1408-14, 2017
                                                      2. McArthur TA et al: CT evaluation of common duct dilation after cholecystectomy and with advancing age. Abdom Imaging. 40(6):1581-6, 2015
                                                      3. Itoi T et al: Extrahepatic bile duct measurement by using transabdominal ultrasound in Japanese adults: multi-center prospective study. J Gastroenterol. 48(9):1045-50, 2013
                                                      4. McArthur TA et al: The common duct dilates after cholecystectomy and with advancing age: reality or myth? J Ultrasound Med. 32(8):1385-91, 2013
                                                      5. Lutz, H et al: Manual of Diagnostic Ultrasound. World Heath Organization, 2011
                                                      6. O'Connor OJ et al: Imaging of biliary tract disease. AJR Am J Roentgenol. 197(4):W551-8, 2011
                                                      7. Holm AN et al: What should be done with a dilated bile duct? Curr Gastroenterol Rep. 12(2):150-6, 2010
                                                      8. Horrow MM: Ultrasound of the extrahepatic bile duct: issues of size. Ultrasound Q. 26(2):67-74, 2010
                                                      9. Rubens DJ. Ultrasound imaging of the biliary tract. Ultrasound Clinics. 2(3):391-413, 2007
                                                      10. Gandolfi L et al: The role of ultrasound in biliary and pancreatic diseases. Eur J Ultrasound. 16(3):141-59, 2003
                                                      11. von Herbay A et al: Color doppler sonography avoids misinterpretation of the "parallel channel sign" in the sonographic diagnosis of cholestasis. J Clin Ultrasound. 27(8):426-32, 1999
                                                      12. Laing FC: The gallbladder and bile ducts. In Rumack CM et al: Diagnostic Ultrasound. Vol. 1. Mosby-Year Book. 75–223, 1998
                                                      13. Bressler EL et al: Sonographic parallel channel sign: a reappraisal. Radiology. 164(2):343-6, 1987