TY - CHAP M1 - Book, Section TI - Hydrocephalus A1 - Wells, Robert G. PY - 2015 T2 - Diagnostic Imaging of Infants and Children AB - Hydrocephalus refers to abnormal dilation of the ventricular system in association with narrowing of the subarachnoid spaces. Elevation of the intraventricular pressure may or may not be present. Hydrocephalus is not synonymous with ventriculomegaly. Most forms of hydrocephalus are due to an imbalance between the formation and absorption of cerebrospinal fluid, that is, inadequate passage of cerebrospinal fluid (CSF) from its point of production within the ventricular system to its point of absorption into the systemic circulation. The excess intraventricular CSF that results from this imbalance in turn causes an increase in intracranial pressure. The degree and pattern of enlargement of the CSF pathways and the amount of damage to central nervous system (CNS) structures depend on both the severity and the pathogenesis of the hydrocephalus.1–3 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1148948749 ER -