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Retained Products of Conception
Priya Menon Krishnarao, MD; Aya Kamaya, MD, FSRU, FSAR
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KEY FACTS

  • Terminology

    • Imaging

      • Top Differential Diagnoses

        • Pathology

          • Clinical Issues

            TERMINOLOGY

            • Abbreviations

              • Retained products of conception (RPOC)
            • Synonyms

              • Retained trophoblastic tissue
              • Retained placenta
              • Placental polyp
            • Definitions

              • Retained placental tissue
                • Occurs after delivery or termination of pregnancy

            IMAGING

            • General Features

              • Ultrasonographic Findings

                • CT Findings

                  • MR Findings

                    • Imaging Recommendations

                      DIFFERENTIAL DIAGNOSIS

                        PATHOLOGY

                        • General Features

                          • Staging, Grading, & Classification

                            CLINICAL ISSUES

                            • Presentation

                              • Demographics

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Image Interpretation Pearls

                                    Selected References

                                    1. Goyal S et al: Acquired uterine arteriovenous malformation developing in retained products of conception: a diagnostic dilemma. J Obstet Gynaecol Res. 40(1):271-4, 2014
                                    2. Zubor P et al: Recurrent secondary postpartum hemorrhages due to placental site vessel subinvolution and local uterine tissue coagulopathy. BMC Pregnancy Childbirth. 14:80, 2014
                                    3. Sellmyer MA et al: Physiologic, histologic, and imaging features of retained products of conception. Radiographics. 33(3):781-96, 2013
                                    4. Atri M et al: Best predictors of grayscale ultrasound combined with color Doppler in the diagnosis of retained products of conception. J Clin Ultrasound. 39(3):122-7, 2011
                                    5. Kitahara T et al: Management of retained products of conception with marked vascularity. J Obstet Gynaecol Res. 37(5):458-64, 2011
                                    6. Kamaya A et al: Retained products of conception: spectrum of color Doppler findings. J Ultrasound Med. 28(8):1031-41, 2009
                                    7. Weydert JA et al: Subinvolution of the placental site as an anatomic cause of postpartum uterine bleeding: a review. Arch Pathol Lab Med. 130(10):1538-42, 2006
                                    8. Durfee SM et al: The Sonographic and Color Doppler Features of Retained Products of Conception. J Ultrasound Med. 24(9):1181-1186, 2005
                                    9. Sadan O et al: Role of sonography in the diagnosis of retained products of conception. J Ultrasound Med. 23(3):371-4, 2004
                                    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

                                              • Abbreviations

                                                • Retained products of conception (RPOC)
                                              • Synonyms

                                                • Retained trophoblastic tissue
                                                • Retained placenta
                                                • Placental polyp
                                              • Definitions

                                                • Retained placental tissue
                                                  • Occurs after delivery or termination of pregnancy

                                              IMAGING

                                              • General Features

                                                • Ultrasonographic Findings

                                                  • CT Findings

                                                    • MR Findings

                                                      • Imaging Recommendations

                                                        DIFFERENTIAL DIAGNOSIS

                                                          PATHOLOGY

                                                          • General Features

                                                            • Staging, Grading, & Classification

                                                              CLINICAL ISSUES

                                                              • Presentation

                                                                • Demographics

                                                                  • Treatment

                                                                    DIAGNOSTIC CHECKLIST

                                                                    • Image Interpretation Pearls

                                                                      Selected References

                                                                      1. Goyal S et al: Acquired uterine arteriovenous malformation developing in retained products of conception: a diagnostic dilemma. J Obstet Gynaecol Res. 40(1):271-4, 2014
                                                                      2. Zubor P et al: Recurrent secondary postpartum hemorrhages due to placental site vessel subinvolution and local uterine tissue coagulopathy. BMC Pregnancy Childbirth. 14:80, 2014
                                                                      3. Sellmyer MA et al: Physiologic, histologic, and imaging features of retained products of conception. Radiographics. 33(3):781-96, 2013
                                                                      4. Atri M et al: Best predictors of grayscale ultrasound combined with color Doppler in the diagnosis of retained products of conception. J Clin Ultrasound. 39(3):122-7, 2011
                                                                      5. Kitahara T et al: Management of retained products of conception with marked vascularity. J Obstet Gynaecol Res. 37(5):458-64, 2011
                                                                      6. Kamaya A et al: Retained products of conception: spectrum of color Doppler findings. J Ultrasound Med. 28(8):1031-41, 2009
                                                                      7. Weydert JA et al: Subinvolution of the placental site as an anatomic cause of postpartum uterine bleeding: a review. Arch Pathol Lab Med. 130(10):1538-42, 2006
                                                                      8. Durfee SM et al: The Sonographic and Color Doppler Features of Retained Products of Conception. J Ultrasound Med. 24(9):1181-1186, 2005
                                                                      9. Sadan O et al: Role of sonography in the diagnosis of retained products of conception. J Ultrasound Med. 23(3):371-4, 2004