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Dichorionic Diamniotic Twins
Anne Kennedy, MD
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KEY FACTS

  • Imaging

    • Top Differential Diagnoses

      • Clinical Issues

        • Diagnostic Checklist

          TERMINOLOGY

          • Abbreviations

            • Dichorionic (DC) diamniotic twins
          • Definitions

            • 2 fetuses in separate chorionic sacs
              • 2 amniotic sacs
              • 2 yolk sacs (YS)

          IMAGING

          • General Features

            • Ultrasonographic Findings

              • Imaging Recommendations

                DIFFERENTIAL DIAGNOSIS

                  PATHOLOGY

                  • General Features

                    CLINICAL ISSUES

                    • Presentation

                      • Demographics

                        • Natural History & Prognosis

                          • Treatment

                            DIAGNOSTIC CHECKLIST

                            • Image Interpretation Pearls

                              Selected References

                              1. Cimpoca B et al: Twin pregnancy with two live fetuses at 11-13 weeks: effect of one fetal death on pregnancy outcome. Ultrasound Obstet Gynecol. 55(4):482-8, 2020
                              2. Gulati N et al: Cause of intrauterine and neonatal death in twin pregnancies (CoDiT): development of a novel classification system. BJOG. 127(12):1507-15, 2020
                              3. Li L et al: Chromosomal abnormalities detected by karyotyping and chromosomal microarray analysis in twins with structural anomalies. Ultrasound Obstet Gynecol. 55(4):502-9, 2020
                              4. Louchet M et al: Delayed-interval delivery of twins in 13 pregnancies. J Gynecol Obstet Hum Reprod. 49(2):101660, 2020
                              5. Roman A et al: Physical examination-indicated cerclage in twin pregnancy: a randomized controlled trial. Am J Obstet Gynecol. 223(6):902.e1-11, 2020
                              6. Di Mascio D et al: Birthweight discordance and neonatal morbidity in twin pregnancies: a systematic review and meta-analysis. Acta Obstet Gynecol Scand. 98(10):1245-57, 2019
                              7. Gil MM et al: Screening for trisomies by cfDNA testing of maternal blood in twin pregnancy: update of The Fetal Medicine Foundation results and meta-analysis. Ultrasound Obstet Gynecol. 53(6):734-42, 2019
                              8. Khalil A et al: Consensus definition and essential reporting parameters of selective fetal growth restriction in twin pregnancy: a Delphi procedure. Ultrasound Obstet Gynecol. 53(1):47-54, 2019
                              9. D'Antonio F et al: Birth-weight discordance and neonatal morbidity in twin pregnancy: analysis of STORK multiple pregnancy cohort. Ultrasound Obstet Gynecol. 52(5):586-92, 2018
                              10. Ward PL et al: Single intrauterine death in twins: the importance of fetal order. Twin Res Hum Genet. 21(6):556-62, 2018
                              11. Carter EB et al: The impact of chorionicity on maternal pregnancy outcomes. Am J Obstet Gynecol. 213(3):390.e1-7, 2015
                              12. Committee Opinion No. 640: Cell-free DNA screening for fetal aneuploidy. Obstet Gynecol. 126(3):e31-7, 2015
                              13. Henry A et al: Pregnancy outcomes before and after institution of a specialised twins clinic: a retrospective cohort study. BMC Pregnancy Childbirth. 15:217, 2015
                              14. Rosner JY et al: Abnormal biochemical analytes used for aneuploidy screening and adverse pregnancy outcomes in twin gestations. Am J Perinatol. 32(14):1331-5, 2015
                              15. van de Mheen L et al: Pregnancy outcome after fetal reduction in women with a dichorionic twin pregnancy. Hum Reprod. 30(8):1807-12, 2015
                              16. Blumenfeld YJ et al: Accuracy of sonographic chorionicity classification in twin gestations. J Ultrasound Med. 33(12):2187-92, 2014
                              17. Egic AS et al: Degree and rate of growth discordance in dichorionic twins conceived by in vitro fertilization. Obstet Gynecol Int. 2014:543728, 2014
                              18. Ratha C et al: An analysis of pregnancy outcome in dichorionic and monochorionic twins given special antenatal and intranatal care: a four-year survey. J Obstet Gynaecol India. 64(4):255-9, 2014
                              19. Alvarado EA et al: Selective termination in dichorionic twins discordant for congenital defect. Eur J Obstet Gynecol Reprod Biol. 161(1):8-11, 2012
                              Related Anatomy
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                              Related Differential Diagnoses
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                              References
                              Tables

                              Tables

                              KEY FACTS

                              • Imaging

                                • Top Differential Diagnoses

                                  • Clinical Issues

                                    • Diagnostic Checklist

                                      TERMINOLOGY

                                      • Abbreviations

                                        • Dichorionic (DC) diamniotic twins
                                      • Definitions

                                        • 2 fetuses in separate chorionic sacs
                                          • 2 amniotic sacs
                                          • 2 yolk sacs (YS)

                                      IMAGING

                                      • General Features

                                        • Ultrasonographic Findings

                                          • Imaging Recommendations

                                            DIFFERENTIAL DIAGNOSIS

                                              PATHOLOGY

                                              • General Features

                                                CLINICAL ISSUES

                                                • Presentation

                                                  • Demographics

                                                    • Natural History & Prognosis

                                                      • Treatment

                                                        DIAGNOSTIC CHECKLIST

                                                        • Image Interpretation Pearls

                                                          Selected References

                                                          1. Cimpoca B et al: Twin pregnancy with two live fetuses at 11-13 weeks: effect of one fetal death on pregnancy outcome. Ultrasound Obstet Gynecol. 55(4):482-8, 2020
                                                          2. Gulati N et al: Cause of intrauterine and neonatal death in twin pregnancies (CoDiT): development of a novel classification system. BJOG. 127(12):1507-15, 2020
                                                          3. Li L et al: Chromosomal abnormalities detected by karyotyping and chromosomal microarray analysis in twins with structural anomalies. Ultrasound Obstet Gynecol. 55(4):502-9, 2020
                                                          4. Louchet M et al: Delayed-interval delivery of twins in 13 pregnancies. J Gynecol Obstet Hum Reprod. 49(2):101660, 2020
                                                          5. Roman A et al: Physical examination-indicated cerclage in twin pregnancy: a randomized controlled trial. Am J Obstet Gynecol. 223(6):902.e1-11, 2020
                                                          6. Di Mascio D et al: Birthweight discordance and neonatal morbidity in twin pregnancies: a systematic review and meta-analysis. Acta Obstet Gynecol Scand. 98(10):1245-57, 2019
                                                          7. Gil MM et al: Screening for trisomies by cfDNA testing of maternal blood in twin pregnancy: update of The Fetal Medicine Foundation results and meta-analysis. Ultrasound Obstet Gynecol. 53(6):734-42, 2019
                                                          8. Khalil A et al: Consensus definition and essential reporting parameters of selective fetal growth restriction in twin pregnancy: a Delphi procedure. Ultrasound Obstet Gynecol. 53(1):47-54, 2019
                                                          9. D'Antonio F et al: Birth-weight discordance and neonatal morbidity in twin pregnancy: analysis of STORK multiple pregnancy cohort. Ultrasound Obstet Gynecol. 52(5):586-92, 2018
                                                          10. Ward PL et al: Single intrauterine death in twins: the importance of fetal order. Twin Res Hum Genet. 21(6):556-62, 2018
                                                          11. Carter EB et al: The impact of chorionicity on maternal pregnancy outcomes. Am J Obstet Gynecol. 213(3):390.e1-7, 2015
                                                          12. Committee Opinion No. 640: Cell-free DNA screening for fetal aneuploidy. Obstet Gynecol. 126(3):e31-7, 2015
                                                          13. Henry A et al: Pregnancy outcomes before and after institution of a specialised twins clinic: a retrospective cohort study. BMC Pregnancy Childbirth. 15:217, 2015
                                                          14. Rosner JY et al: Abnormal biochemical analytes used for aneuploidy screening and adverse pregnancy outcomes in twin gestations. Am J Perinatol. 32(14):1331-5, 2015
                                                          15. van de Mheen L et al: Pregnancy outcome after fetal reduction in women with a dichorionic twin pregnancy. Hum Reprod. 30(8):1807-12, 2015
                                                          16. Blumenfeld YJ et al: Accuracy of sonographic chorionicity classification in twin gestations. J Ultrasound Med. 33(12):2187-92, 2014
                                                          17. Egic AS et al: Degree and rate of growth discordance in dichorionic twins conceived by in vitro fertilization. Obstet Gynecol Int. 2014:543728, 2014
                                                          18. Ratha C et al: An analysis of pregnancy outcome in dichorionic and monochorionic twins given special antenatal and intranatal care: a four-year survey. J Obstet Gynaecol India. 64(4):255-9, 2014
                                                          19. Alvarado EA et al: Selective termination in dichorionic twins discordant for congenital defect. Eur J Obstet Gynecol Reprod Biol. 161(1):8-11, 2012