Four major patterns of placental injury: a stepwise guide for understanding and implementing the 2016 Amsterdam consensus.
Redline Raymond W, Ravishankar Sanjita, Bagby Christina M, +2 more·Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
The Amsterdam classification system defines four major patterns of placental injury, maternal vascular malperfusion, fetal vascular malperfusion, acute chorioamnionitis, and villitis of unknown etiology, and lists the histologic findings that characterize each. However, there continues to be uncertainty regarding speci…