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Ureterectasis of Pregnancy
Kyle K. Jensen, MD; Amir A. Borhani, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Synonyms

              • Hydroureter of pregnancy, physiologic hydronephrosis during pregnancy, pelvocaliectasis of pregnancy
            • Definitions

              • Physiologic ureter and renal collecting system dilatation during pregnancy

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • CT Findings

                  • Radiographic Findings

                    • MR Findings

                      • Imaging Recommendations

                        DIFFERENTIAL DIAGNOSIS

                          PATHOLOGY

                          • General Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Natural History & Prognosis

                                  • Treatment

                                    Selected References

                                    1. Maynard S: Renal Physiology in Pregnancy. In Sachdeva M et al (Eds), Obstetric and Gynecologic Nephrology. Springer. 1-10, 2020
                                    2. Ali A et al: Emergent MRI for acute abdominal pain in pregnancy-review of common pathology and imaging appearance. Emerg Radiol. 27(2):205-14, 2020
                                    3. Moreno CC et al: Nonfetal imaging during pregnancy: acute abdomen/pelvis. Radiol Clin North Am. 58(2):363-80, 2020
                                    4. Samson P et al: Nephrolithiasis and Pregnancy. In Sachdeva M et al (Eds), Obstetric and Gynecologic Nephrology. Springer. 101-111, 2020
                                    5. Kotecha HM et al: What to expect when they are expecting: magnetic resonance imaging of the acute abdomen and pelvis in pregnancy. Curr Probl Diagn Radiol. 46(6):423-31, 2017
                                    6. Semins MJ et al: Kidney stones during pregnancy. Nat Rev Urol. 11(3):163-8, 2014
                                    7. Masselli G et al: Imaging of stone disease in pregnancy. Abdom Imaging. 38(6):1409-14, 2013
                                    8. Cheung KL et al: Renal physiology of pregnancy. Adv Chronic Kidney Dis. 20(3):209-14, 2013
                                    9. Masselli G et al: Evaluating the acute abdomen in the pregnant patient. Radiol Clin North Am. 53(6):1309-25, 2015
                                    10. Spalluto LB et al: MR imaging evaluation of abdominal pain during pregnancy: appendicitis and other nonobstetric causes. Radiographics. 32(2):317-34, 2012
                                    11. Leyendecker JR et al: MR imaging of maternal diseases of the abdomen and pelvis during pregnancy and the immediate postpartum period. Radiographics. 24(5):1301-16, 2004
                                    12. Nagayama M et al: Fast MR imaging in obstetrics. Radiographics. 22(3):563-80; discussion 580-2, 2002
                                    13. Grenier N et al: Dilatation of the collecting system during pregnancy: physiologic vs obstructive dilatation. Eur Radiol. 10(2):271-9, 2000
                                    14. Jara H et al: MR hydrography: theory and practice of static fluid imaging. AJR Am J Roentgenol. 170(4):873-82, 1998
                                    15. Roy C et al: Fast imaging MR assessment of ureterohydronephrosis during pregnancy. Magn Reson Imaging. 13(6):767-72, 1995
                                    16. Platt JF et al: Acute renal obstruction: evaluation with intrarenal duplex Doppler and conventional US. Radiology. 186(3):685-8, 1993
                                    17. Beydoun SN: Morphologic changes in the renal tract in pregnancy. Clin Obstet Gynecol. 28(2):249-56, 1985
                                    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

                                              • Synonyms

                                                • Hydroureter of pregnancy, physiologic hydronephrosis during pregnancy, pelvocaliectasis of pregnancy
                                              • Definitions

                                                • Physiologic ureter and renal collecting system dilatation during pregnancy

                                              IMAGING

                                              • General Features

                                                • Ultrasonographic Findings

                                                  • CT Findings

                                                    • Radiographic Findings

                                                      • MR Findings

                                                        • Imaging Recommendations

                                                          DIFFERENTIAL DIAGNOSIS

                                                            PATHOLOGY

                                                            • General Features

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Natural History & Prognosis

                                                                    • Treatment

                                                                      Selected References

                                                                      1. Maynard S: Renal Physiology in Pregnancy. In Sachdeva M et al (Eds), Obstetric and Gynecologic Nephrology. Springer. 1-10, 2020
                                                                      2. Ali A et al: Emergent MRI for acute abdominal pain in pregnancy-review of common pathology and imaging appearance. Emerg Radiol. 27(2):205-14, 2020
                                                                      3. Moreno CC et al: Nonfetal imaging during pregnancy: acute abdomen/pelvis. Radiol Clin North Am. 58(2):363-80, 2020
                                                                      4. Samson P et al: Nephrolithiasis and Pregnancy. In Sachdeva M et al (Eds), Obstetric and Gynecologic Nephrology. Springer. 101-111, 2020
                                                                      5. Kotecha HM et al: What to expect when they are expecting: magnetic resonance imaging of the acute abdomen and pelvis in pregnancy. Curr Probl Diagn Radiol. 46(6):423-31, 2017
                                                                      6. Semins MJ et al: Kidney stones during pregnancy. Nat Rev Urol. 11(3):163-8, 2014
                                                                      7. Masselli G et al: Imaging of stone disease in pregnancy. Abdom Imaging. 38(6):1409-14, 2013
                                                                      8. Cheung KL et al: Renal physiology of pregnancy. Adv Chronic Kidney Dis. 20(3):209-14, 2013
                                                                      9. Masselli G et al: Evaluating the acute abdomen in the pregnant patient. Radiol Clin North Am. 53(6):1309-25, 2015
                                                                      10. Spalluto LB et al: MR imaging evaluation of abdominal pain during pregnancy: appendicitis and other nonobstetric causes. Radiographics. 32(2):317-34, 2012
                                                                      11. Leyendecker JR et al: MR imaging of maternal diseases of the abdomen and pelvis during pregnancy and the immediate postpartum period. Radiographics. 24(5):1301-16, 2004
                                                                      12. Nagayama M et al: Fast MR imaging in obstetrics. Radiographics. 22(3):563-80; discussion 580-2, 2002
                                                                      13. Grenier N et al: Dilatation of the collecting system during pregnancy: physiologic vs obstructive dilatation. Eur Radiol. 10(2):271-9, 2000
                                                                      14. Jara H et al: MR hydrography: theory and practice of static fluid imaging. AJR Am J Roentgenol. 170(4):873-82, 1998
                                                                      15. Roy C et al: Fast imaging MR assessment of ureterohydronephrosis during pregnancy. Magn Reson Imaging. 13(6):767-72, 1995
                                                                      16. Platt JF et al: Acute renal obstruction: evaluation with intrarenal duplex Doppler and conventional US. Radiology. 186(3):685-8, 1993
                                                                      17. Beydoun SN: Morphologic changes in the renal tract in pregnancy. Clin Obstet Gynecol. 28(2):249-56, 1985