Table 2.
Placenta microscopic assessment in 1101 participants.
| Features of maternal vascular malperfusion | ||||
| Decidual arteriopathy | Muscular hypertrophy | Fibrinoid necrosis | Fibrinoid necrosis with atherosis | |
| 100 (9.1%) | 57 (57.0%) | 43 (43.0%) | 0 (0.0%) | |
| Features of fetal vascular malperfusion | ||||
| Thrombosis of cord vessels | Artery | Vein | Both | |
| 22 (2.0%) | 6 (27.3%) | 15 (68.2%) | 1 (4.5%) | |
| Avascular villi | Regional | Diffuse | ||
| 237 (21.5%) | 229 (96.6%) | 8 (3.4%) | ||
| Chorionic plate thrombosis | Artery | Vein | Both | Indeterminate |
| 110 (10.0%) | 3 (2.7%) | 20 (18.2%) | 29 (26.4%) | 58 (52.7%) |
| Villous-stromal karyorrhexis | Regional | Diffuse | ||
| 293 (26.6%) | 268 (91.5%) | 25 (8.5%) | ||
| Inflammatory response | ||||
| Chorioamnionitis | Acute | Chronic | Eosinophilic | |
| 361 (32.8%) | 333 (92.2%) | 28 (7.8%) | 0 (0.0%) | |
| Subchorion | Chorion | Chorioamnion | Indeterminate | |
| 232 (64.3%) | 68 (18.8%) | 60 (16.6%) | 1 (0.3%) | |
| Villitis | Acute | Chronic specific | VUE | |
| 249 (22.6%) | 2 (0.8%) | 7 (2.8%) | 240 (96.4%) | |
| Funisitis | Perivascular | Superficial | Both | |
| 56 (5.1%) | 54 (96.4%) | 2 (3.6%) | 0 (0.0%) | |
| Vasculitis | One vessel | Two vessels | Three vessels | |
| 75 (6.8%) | 46 (61.3%) | 9 (12.0%) | 20 (26.7%) | |
| Artery | One | Two | ||
| 33 (44.0%) | 13 (39.4%) | 20 (60.6%) |
VUE villitis of unknown etiology (chronic non-specific).