Leukomalacia, PeriventricularCerebral VentriclesPeriventricular Nodular HeterotopiaEchoencephalographyInfant, Premature, DiseasesInfant, NewbornCerebral HemorrhageInfant, PrematureEncephalomalaciaInjections, IntraventricularCerebral PalsyBrain DiseasesGestational AgeIntracranial HemorrhagesHydrocephalusHypoxia-Ischemia, BrainBronchopulmonary DysplasiaInfant, Very Low Birth WeightBrainMagnetic Resonance ImagingOligodendrogliaDevelopmental DisabilitiesVentriculostomyInfant, Extremely Low Birth WeightBrain Damage, ChronicNerve Fibers, MyelinatedCerebral Ventricle NeoplasmsInfant, Low Birth WeightGliosisMidline Thalamic NucleiLateral VentriclesRespiratory Distress Syndrome, NewbornIntensive Care Units, NeonatalCerebral VentriculographyPremature BirthThird VentriclePregnancyInfusions, IntraventricularChoristomaAnterior Thalamic NucleiFilaminsRetrospective StudiesNeuroendoscopyKisspeptinsMyelin Basic ProteinHypothalamusHyperoxiaProspective StudiesEthamsylateAnimals, NewbornEpendymaCerebrospinal Fluid ShuntsRisk FactorsPreoptic AreaNeurologic ExaminationCranial Fontanelles