SUBEPENDYMAL and intraventricular hemorrhage are common and serious problems in the premature neonate. The hemorrhage usually occurs in neonates of less than 32 weeks' gestation and weighing less than 1,500 g. The incidence of these complications initially recognized on computed tomographic (CT) scanning ranges from 44% to 70% in those infants requiring assisted ventilation.1 The source of the intraventricular hemorrhage is the germinal matrix in 90% or more of the cases.2 This structure lies beneath the ependyma of the lateral ventricles and usually involutes at 34 weeks' gestation.3 The typical subependymal hemorrhage is present between the caudate nucleus and the frontal horns, anterior to the origin of the foramen of Monro.
Other equally important disorders in the neonate include hydrocephalus, meningomyelocele with Arnold-Chiari malformations, other congenital abnormalities, vascular abnormalities, and benign and malignant tumors.
With the use of the current-generation high-resolution, real-time scanners, the diagnosis of intracranial
Rose WS, Wolfson M. Real-Time Ultrasonography of the Neonatal Head. JAMA. 1983;250(23):3212–3215. doi:10.1001/jama.1983.03340230064033
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