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INTRODUCTION Embryology The ventricles arise from the lumen of the forebrain, midbrain, and hindbrain. At approximately the sixth week of gestation, the lateral ventricles arise as extensions from the anterior-superior aspect of the third ventricle and communicate through the foramen…
INTRODUCTION Background Trauma is the most common cause of death and a significant cause of morbidity in children. Both accidental and nonaccidental trauma are common in children. Several anatomic differences in younger children should be highlighted to understand why younger…
INTRODUCTION Phakomatoses are a group of neurocutaneous disorders that involve structures arising from the embryologic ectoderm, resulting in abnormalities of the skin, nervous system, retina, and globe. There are approximately 30 different phakomatoses; however, the main phakomatoses include neurofibromatosis type…
INTRODUCTION Background Epilepsy is a chronic seizure condition in which abnormal excessive or uncoordinated neuronal activity leads to abnormal brain function. About 1% of children in the United States have epilepsy. Approximately 66% to 75% of children with epilepsy will…
INTRODUCTION Background Central nervous system (CNS) tumors are the second most common pediatric cancer diagnosed each year, accounting for approximately 25% of childhood cancers. They are responsible for the second most common cause of cancer deaths in children. Survival has…
INTRODUCTION Background Demyelinating and inflammatory disorders are neuroimmunologic disorders in which there is an exaggerated immune response to the central nervous system (CNS, Fig. 6.1 ). Neuroimmune disorders have become increasingly recognized as more prevalent than was previously understood, and…
INTRODUCTION Background Central nervous system (CNS) infections can be due to multiple pathogens; however, viral and bacterial infections are the most common ( Table 5.1 ). The CNS injury that results from the infection depends on the timing of infection,…
INTRODUCTION Background Inherited metabolic disorders are challenging to diagnose because they have variable clinical severity and age at presentation, are uncommonly encountered, and can have a range of imaging appearances. The variability in clinical manifestation and imaging appearance relates to…
HYPOXIC ISCHEMIC INJURY Key Points Background Hypoxic ischemic injury (HII) typically refers to a combination of a hypoxic and hypoperfusion injury to the fetal or neonatal brain. Clinical manifestations of HII include low Apgar scores (0–3 at 5 minutes and…
INTRODUCTION Brain malformations represent a disruption of normal development and can be caused by genetic, infectious, ischemic, and hemorrhagic factors. As seen in Table 2.1 , the time at which the insult occurs during development will determine the malformation. Because…