Placenta accreta spectrum: imaging and diagnosis

  • Published on 01/10/2025
  •  Reading time: 7 min.

Alice Self BMBCh, MRCOG ST6 Trainee 1, Angelo Cavallaro MD O&G Specialist, Consultant in Obstetrics and Fetal Medicine 2, Sally L. Collins BSc, BMBCh, DPhil, FRCOG Consultant Obstetrician and PAS Lead 3,4

1 Shrewsbury and Telford Hospitals Apley Castle Telford TF1 6TF UK
2 John Radcliffe Hospital Headley Way Oxford OX3 9DU UK
3 Birmingham Women's Hospital Birmingham UK
4 Nuffield Department of Women's and Reproductive Health University of Oxford Oxford UK

Abstract

Key content

  • Antenatal imaging is a screening tool integral to ensuring women are cared for in the most appropriate setting.
  • The pretest probability of PAS should be considered before any imaging is performed.
  • PAS is an iatrogenic disease. Any process which disrupts the endometrium increases the risk. Caesarean birth is the most common cause.
  • Specialist placental assessment in asymptomatic women should be offered between 24 and 28 weeks.
  • Ultrasound...
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