Late Onset Brain Anomalies: Tumors, Cysts and Hemorrhages

Most fetal brain anomalies can be diagnosed during the second trimester scan performed to screen for fetal malformations. However; there are some cerebral pathologies which become evident only during the late second and third trimester of pregnancy. Occupying space lesions, such as tumors, cysts, vascular malformations and hemorrhages frequently appear as late onset complications in a fetus diagnosed as normal during the second trimester anomaly scan. In this review paper the sonographic patterns of these anomalies will be described. Particular attention will be paid to the prognosis, which is extremely variable, ranging from the lethal outcome of huge brain tumors, to severe neurological handicap of severe hemorrhages or leukomalacic cysts, to normal postnatal outcome of some arachnoid cysts. How to cite this article D'Addario V, Capuano P, Volpe G. Late Onset Brain Anomalies: Tumors, Cysts and Hemorrhages. Donald School J Ultrasound Obstet Gynecol 2013;7(4):484-491.