Fig. 2
From: COVID-19 in pregnancy: placental pathological patterns and effect on perinatal outcome in five cases
Distal villous hypoplasia with elongated and slender distal villi and wide intervillous spaces (a Case 3, haematoxylin and eosin stain × 100) and Tenney-Parker change, with villi showing an increased number of syncytial knots (b Case 3, haematoxylin and eosin stain × 100, arrowheads: syncytial knots). Chorangiosis with terminal villi containing numerous capillaries (c Case 2, haematoxylin and eosin stain, × 100); delayed maturation (d Case 1, haematoxylin and eosin stain × 100)