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Updated: May 21, 2025
07:04
Human Placental and Decidual Organ Cultures to Study Infections at the Maternal-fetal Interface
Published on: July 21, 2016
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Updates and Knowledge Gaps in Placenta Accreta Spectrum Biology
Lior Kashani-Ligumsky1, Olivia Scott1, Guadalupe Martinez1
1Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology.
Clinical Obstetrics and Gynecology
|April 21, 2025
Summary
Placenta accreta spectrum (PAS) is now understood to stem from a defective uterine scar, not aggressive trophoblast invasion. This re-evaluation impacts PAS prevention, diagnosis, and treatment strategies.
Area of Science:
- Reproductive Medicine
- Obstetrics
- Pathology
Background:
- Placenta accreta spectrum (PAS) traditionally diagnosed via histopathology focusing on trophoblast invasion.
- PAS is an iatrogenic and morbid pregnancy complication with increasing prevalence.
Purpose of the Study:
- To re-evaluate the etiology of PAS, shifting focus from trophoblast invasion to the decidual-myometrial interface.
- To highlight the role of scar tissue in PAS development.
Main Methods:
- Review of current research on PAS pathophysiology.
- Analysis of the shift in etiological understanding.
Main Results:
- Recent research reframes PAS etiology, emphasizing a defective scarred decidual-myometrial interface.
- The previous focus on aggressive trophoblast invasion is being replaced by the scar tissue hypothesis.
Conclusions:
- Understanding PAS as a scar-related defect is crucial for improving prevention and diagnosis.
- This paradigm shift necessitates updated treatment approaches for PAS.
Keywords:
accretacesareancollagenmatrixmorbidly adherent placentaobstetricsplacentapreviauterine dehiscenceMore Related Videos
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