Fig. 1

Placental pathology. A Decidual arteriopathy: thrombosis in spiral arteries of the basal plate. The spiral artery on the bottom is almost entirely occluded. H&E-stained section at 10X. B Presence of intramural endovascular trophoblasts in the third trimester. This feature is included in the spectrum of decidual arteriopathy. A few scattered trophoblast cells located in the lumen of the spiral artery are presented on the right side of the microphotograph. Trophoblast cells were highlighted by the cytokeratin immunostaining. C Subchorionic haematoma. Beneath the chorionic plate, the haematoma was seen on the right side together with overlying infarction on the left side. H&E-stained section at 10X. D Immunohistochemistry for SARS-CoV-2 in the placenta. The picture shows negative immunostaining in the placental parenchyma