Pathogenesis and evolution of periventricular leukomalacia in infancy.

Basal Ganglia/pathology Birth Injuries Brain Diseases/etiology Brain Stem/pathology Cerebellum/pathology Cerebral Arteries Cerebral Cortex/pathology Cerebral Ventricles/pathology Child, Preschool Encephalomalacia/etiology,pathology Female Hippocampus/pathology Humans Infant Infant, Newborn Infant, Newborn, Diseases/etiology,pathology Male Middle Aged Necrosis/etiology,pathology Pregnancy Pregnancy Complications Pregnancy Complications, Infectious Subarachnoid Hemorrhage/pathology