ABSTRACT. Thrombotic disease is rare in neonates. The main risk factors at this age are perinatal asphyxia, maternal diabetes, sepsis, polycythemia, dehydration, a low cardiac output, and in primis the catheterization of central lines. Another important risk factor is inherited thrombophilia. Arterial thrombosis is even more rare than venous thrombosis and less related to most of the risk factors listed above; it occurs more frequently in the iliac, femoral, and cerebral arteries but very rarely in the aorta. Most of the described cases of aortic thrombosis are associated with the catheterization of an umbilical artery and involve the descending tract and the renal arteries; very few relate to the ascending tract and the aortic arch. The possible role of virus-induced primary vascular endothelium damage in the etiopathogenesis of neonatal arterial thrombosis has been previously hypothesized. Herpesviruses, particularly human cytomegalovirus (HCMV), can infect endothelial cells and directly damage intact vascular endothelium, altering its thromboresistant surface as a result of procoagulant activity mediated by specific viral surface phospholipids, necessary for the coagulation enzyme complex assembly that leads to thrombin generation. We describe a case of congenital aortic arch thrombosis. The clinical, laboratory, and virologic pictures; the anatomopathologic findings (fully compatible with viral infection); the detection of HCMV in various tissues (including the aorta); and the absence of other causes of aortic thrombosis make it possible to attribute the case to a severe congenital HCMV infection with multiple organ involvement, after the primary infection of the mother. We describe a case of congenital aortic arch thrombosis in which, on the basis of clinical and virologic findings (and having excluded other thrombosis-favoring conditions), the most likely cause was a severe congenital HCMV infection with multiple organ involvement. The hemostatic system disorders and hemodynamic disturbances related to viral cardiac damage explain the clinical features of the case and indicate that congenital HCMV infection should be included among the causes of neonatal aortic thrombosis.
CASE REPORTA female infant was delivered by cesarean section after 37 weeks of gestation because ultrasonography revealed fetal cardiomegaly, cardiac hypertrophy, and pericardial effusion, and it was difficult to image the aorta and aortic flow. Moreover, the pregnancy was complicated by intrauterine growth retardation (IUGR) and oligohydramnios. Genetic amniocentesis performed during the 18th week of gestation revealed a fetal 46XX karyotype. Maternal serologic tests for transmissible infections were performed only during the first trimester of pregnancy; the mother was immune to toxoplasmosis and rubella and negative for HCMV, hepatitis C, hepatitis B, and human immunodeficiency virus; the presence of herpes simplex viruses was not investigated. The pregnancy was uncomplicated until the 30th week, when fetal echography first revealed I...