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Late Preterm/Term Placentas (Late Third Trimester: 32–42 Weeks from LMP)

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Practical Manual of Fetal Pathology

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Abstract

The general approach to placentas delivered after 23 weeks was outlined in the previous section and only a few points of emphasis pertaining to findings most relevant to adverse outcomes in late preterm and term placentas will be mentioned here. The first is the identification of an umbilical cord at risk for interrupted fetoplacental blood flow. Relevant findings include abnormal cord insertion (see below), deformations due to entanglements or prolapse, excessive cord length, hypercoiling, and true umbilical cord knots. The second is documentation of green discoloration of the membranes, chorionic plate, and sometimes the surface of the umbilical cord. Usually due to meconium staining, this finding should prompt histologic evaluation for the duration of meconium exposure. Finally, identification of excessively pale and/or edematous parenchyma that can accompany massive fetomaternal hemorrhage with or without superimposed hydrops fetalis.

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Authors and Affiliations

  1. Perinatal, Pediatric, and Gynecologic Pathology, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH, USA

    Raymond W. Redline & Sanjita Ravishankar

Authors
  1. Raymond W. Redline
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  2. Sanjita Ravishankar
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Correspondence to Raymond W. Redline .

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Editors and Affiliations

  1. Department of Fetal Pathology, Antoine Béclère Hospital, AP-HP Paris Saclay University, Paris, France

    Jelena Martinovic

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Redline, R.W., Ravishankar, S. (2021). Late Preterm/Term Placentas (Late Third Trimester: 32–42 Weeks from LMP). In: Martinovic, J. (eds) Practical Manual of Fetal Pathology. Springer, Cham. https://doi.org/10.1007/978-3-030-42492-3_16

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  • DOI: https://doi.org/10.1007/978-3-030-42492-3_16

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-42491-6

  • Online ISBN: 978-3-030-42492-3

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