Placenta
General
4 main categories
Author: Sanjita Ravishankar, M.D.
Editorial Board Member: Ricardo R. Lastra, M.D.
Deputy Editor-in-Chief: Jennifer A. Bennett, M.D.
Last author update: 15 November 2021
Last staff update: 6 March 2024
Copyright: 2021, PathologyOutlines.com, Inc.
PubMed Search: Categories of placental injury
Table of Contents
Definition / general | 4 main categories of placental pathology | Other categories of placental pathology | Sample pathology reportCite this page: Ravishankar S. 4 main categories. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/placenta4categories.html. Accessed April 23rd, 2024.
Definition / general
- Most placental pathologic findings can be organized into 1 of 4 major categories of placental injury (Mod Pathol 2021;34:1074)
- This framework is used by the 2016 Amsterdam Consensus Classification (Arch Pathol Lab Med 2016;140:698)
- These categories are also used as top line diagnoses in pathology reporting, with supporting histopathologic findings listed underneath (see Sample pathology report)
- Existing placenta articles in this chapter are organized below within the 4 category framework
4 main categories of placental pathology
- Acute chorioamnionitis:
- Villitis of unknown etiology:
- Maternal vascular malperfusion:
- Fetal vascular malperfusion:
Other categories of placental pathology
- Lesions with increased risk of recurrence:
- Villous capillary lesions:
- Miscellaneous:
