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2000
Volume 22, Issue 1
  • ISSN: 1573-4048
  • E-ISSN: 1875-6581

Abstract

Introduction

Retained products of conception (RPOC) are a common cause of secondary postpartum haemorrhage. They pose both immediate and long-term health risks, such as abnormal bleeding, infection, and fertility issues. Ultrasound (USG) is the first line of imaging used to diagnose RPOC. Enhanced myometrial vascularity (EMV) is thought to result from placental site subinvolution due to remnants of conception products. In ultrasound imaging, endometrial vascularity (EMV) is characterized by a network of enlarged, twisted blood vessels that extend from the myometrium into the endometrium. On spectral Doppler, these vessels can exhibit varying degrees of elevated peak systolic velocities and increased diastolic flows. On ultrasound, EMV can appear ominous and is often mistaken for an arteriovenous malformation (AVM).

Case presentation

A 25-year-old woman presented with continuous bleeding per vagina following a surgical termination of a 10-week gestation. Transvaginal ultrasound showed a heterogeneous lesion in the endometrial cavity and multiple dilated vessels in the subjacent myometrium. Doppler imaging showed a high velocity and low resistance pattern suggestive of EMV. Ipsilateral parametrium showed enlarged uterine artery branches. Imaging differentials include RPOC with EMV and AVM. In this case, we discuss the imaging features of RPOC, EMV, and their differentials. We also discuss the implications of the imaging findings on treatment protocols.

Conclusion

Treatment options for RPOC should be tailored to individual clinical circumstances and the grade of RPOC. Enhanced myometrial vascularity is a physiological phenomenon observed in the placental bed and should not be mistaken for AVM.

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2025-03-04
2026-02-26
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References

  1. SellmyerM.A. DesserT.S. MaturenK.E. JeffreyR.B.Jr KamayaA. Physiologic, histologic, and imaging features of retained products of conception.Radiographics201333378179610.1148/rg.333125177 23674774
    [Google Scholar]
  2. GrewalK. Al-MemarM. FourieH. StalderC. TimmermanD. BourneT. Natural history of pregnancy‐related enhanced myometrial vascularity following miscarriage.Ultrasound Obstet. Gynecol.202055567668210.1002/uog.21872 31503383
    [Google Scholar]
  3. HamelC.C. van WesselS. CarnegyA. Diagnostic criteria for retained products of conception: A scoping review.Acta Obstet. Gynecol. Scand.2021100122135214310.1111/aogs.14229 34244998
    [Google Scholar]
  4. KamayaA. PetrovitchI. ChenB. FrederickC.E. JeffreyR.B. Retained products of conception: Spectrum of color Doppler findings.J. Ultrasound Med.20092881031104110.7863/jum.2009.28.8.1031 19643786
    [Google Scholar]
  5. DewildeK. GroszmannY. Van SchoubroeckD. Enhanced myometrial vascularity secondary to retained pregnancy tissue: time to stop misusing the term arteriovenous malformation.Ultrasound Obstet. Gynecol.20246315810.1002/uog.27476 37676250
    [Google Scholar]
  6. VyasS. ChoiH.H. WhetstoneS. JhaP. PoderL. ShumD.J. Ultrasound features help identify patients who can undergo noninvasive management for suspected retained products of conception: A single institutional experience.Abdom. Radiol. (N.Y.)20214662729273910.1007/s00261‑020‑02948‑y 33459841
    [Google Scholar]
  7. Timor-TritschI.E. HaynesM.C. MonteagudoA. KhatibN. KovácsS. Ultrasound diagnosis and management of acquired uterine enhanced myometrial vascularity/arteriovenous malformations.Am. J. Obstet. Gynecol.20162146731.e1731.e1010.1016/j.ajog.2015.12.024 26873276
    [Google Scholar]
  8. GrewalK. JonesB. L’HevederA. The use of intra-operative ultrasound in gynecological surgery: A review.Future Sci. OA202173FSO67810.2144/fsoa‑2020‑0172 33552548
    [Google Scholar]
  9. GroszmannY.S. Healy MurphyA.L. BenacerrafB.R. Diagnosis and management of patients with enhanced myometrial vascularity associated with retained products of conception.Ultrasound Obstet. Gynecol.201852339639910.1002/uog.18954 29124818
    [Google Scholar]
  10. TimmermanD. Van den BoschT. PeeraerK. Vascular malformations in the uterus: Ultrasonographic diagnosis and conservative management.Eur. J. Obstet. Gynecol. Reprod. Biol.200092117117810.1016/S0301‑2115(00)00443‑7 10986453
    [Google Scholar]
  11. MarzocchiG. CasavolaM. PinelliG. LovatoL. Enhanced myometrial vascularity as a cause of heavy bleeding: The emergency radiologist’s point of view.BMJ Case Rep.2024173e255088e810.1136/bcr‑2023‑255088 38499352
    [Google Scholar]
  12. TimmermanD. WautersJ. Van CalenberghS. Color Doppler imaging is a valuable tool for the diagnosis and management of uterine vascular malformations.Ultrasound Obstet. Gynecol.200321657057710.1002/uog.159 12808674
    [Google Scholar]
  13. SylaB.H. FetiuS.S. TafarshikuS.S. Transabdominal two‐ and three‐dimensional color Doppler imaging of a uterine arteriovenous malformation.Ultrasound Obstet. Gynecol.201137337637810.1002/uog.8918 21337661
    [Google Scholar]
  14. ShaabanA.M. RezvaniM. HarounR.R. Gestational trophoblastic disease: Clinical and imaging features.Radiographics201737268170010.1148/rg.2017160140 28287945
    [Google Scholar]
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