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Circumvallate Placenta
Roya Sohaey, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            • Diagnostic Checklist

              TERMINOLOGY

              • Abbreviations

                • Circumvallate placenta (CP)
                • Intrauterine linear echogenicity (ILE)
              • Synonyms

                • Placental band or shelf
                • Placenta extrachorialis
              • Definitions

                • CP: Chorion inserts inward from placental margin toward cord insertion resulting in raised placental margin
                • Circummarginate placenta: Involves only membranes 
                  • Placenta margin not deformed
                  • Not US diagnosis

              IMAGING

              • General Features

                • Ultrasonographic Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Gross Pathologic & Surgical Features

                          • Microscopic Features

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Natural History & Prognosis

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      Selected References

                                      1. Jauniaux E et al: Placental implantation disorders. Obstet Gynecol Clin North Am. 47(1):117-32, 2020
                                      2. Jensen KK et al: Intrauterine linear echogenicities in the gravid uterus: what radiologists should know. Radiographics. 38(2):642-57, 2018
                                      3. Sharma N et al: Coexistent circumvallate placenta and battledore insertion of umbilical cord resulting in grave obstetric outcome: a case report. J Reprod Infertil. 18(4):390-2, 2017
                                      4. de Castro Rezende G et al: Prenatal diagnosis of placenta and umbilical cord pathologies by three-dimensional ultrasound: pictorial essay. Med Ultrason. 17(4):545-9, 2015
                                      5. Mostafa M et al: HDlive image of circumvallate placenta. Ultrasound Obstet Gynecol. 46(4):513-4, 2015
                                      6. Taniguchi H et al: Circumvallate placenta: associated clinical manifestations and complications-a retrospective study. Obstet Gynecol Int. 2014:986230, 2014
                                      7. Arlicot C et al: Three-dimensional surface rendering of the chorionic placental plate: the "tire" sign for the diagnosis of a circumvallate placenta. J Ultrasound Med. 31(2):340-1, 2012
                                      8. Suzuki S: Clinical significance of pregnancies with circumvallate placenta. J Obstet Gynaecol Res. 34(1):51-4, 2008
                                      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

                                                • Diagnostic Checklist

                                                  TERMINOLOGY

                                                  • Abbreviations

                                                    • Circumvallate placenta (CP)
                                                    • Intrauterine linear echogenicity (ILE)
                                                  • Synonyms

                                                    • Placental band or shelf
                                                    • Placenta extrachorialis
                                                  • Definitions

                                                    • CP: Chorion inserts inward from placental margin toward cord insertion resulting in raised placental margin
                                                    • Circummarginate placenta: Involves only membranes 
                                                      • Placenta margin not deformed
                                                      • Not US diagnosis

                                                  IMAGING

                                                  • General Features

                                                    • Ultrasonographic Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Gross Pathologic & Surgical Features

                                                              • Microscopic Features

                                                                CLINICAL ISSUES

                                                                • Presentation

                                                                  • Demographics

                                                                    • Natural History & Prognosis

                                                                      DIAGNOSTIC CHECKLIST

                                                                      • Consider

                                                                        • Image Interpretation Pearls

                                                                          Selected References

                                                                          1. Jauniaux E et al: Placental implantation disorders. Obstet Gynecol Clin North Am. 47(1):117-32, 2020
                                                                          2. Jensen KK et al: Intrauterine linear echogenicities in the gravid uterus: what radiologists should know. Radiographics. 38(2):642-57, 2018
                                                                          3. Sharma N et al: Coexistent circumvallate placenta and battledore insertion of umbilical cord resulting in grave obstetric outcome: a case report. J Reprod Infertil. 18(4):390-2, 2017
                                                                          4. de Castro Rezende G et al: Prenatal diagnosis of placenta and umbilical cord pathologies by three-dimensional ultrasound: pictorial essay. Med Ultrason. 17(4):545-9, 2015
                                                                          5. Mostafa M et al: HDlive image of circumvallate placenta. Ultrasound Obstet Gynecol. 46(4):513-4, 2015
                                                                          6. Taniguchi H et al: Circumvallate placenta: associated clinical manifestations and complications-a retrospective study. Obstet Gynecol Int. 2014:986230, 2014
                                                                          7. Arlicot C et al: Three-dimensional surface rendering of the chorionic placental plate: the "tire" sign for the diagnosis of a circumvallate placenta. J Ultrasound Med. 31(2):340-1, 2012
                                                                          8. Suzuki S: Clinical significance of pregnancies with circumvallate placenta. J Obstet Gynaecol Res. 34(1):51-4, 2008