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Male fetus, 33 gestation weeks (case 5), without congenital anomalies and slight intrauterine growth restriction. The placenta showed a high maternal vascular malperfusion. The mother had a positive history for hypertension and smoking during pregnancy. In (a,b), the localization and extension of peri-adventitia hematoma involved the ductus arteriosus, aortic arch, and brachiocephalic vessels. In (c,d), the complete closure of the ductus by thrombus. Ao: aorta; DA: ductus arteriosus.
